Thursday, September 29, 2016

TA8215 4 Channel Power Amplifier CIrcuit

 This circuit is a hardly singular for the reason that it is a 4 channel amplifier. each one channel of this amplifier can furnish with an output of 15Watts into a 4 ohm amplifier. Using IC TA8215 The amplifier can subsist operated from a single 12V DC supply and this makes it likely to spend this amplifier happening car audio applications too.

The circuit is based on the 15W BTL X 2 channel audio power amplifier IC TA8215 from Toshiba. Even though whittle is specifically designed designed for car audio applications it can stay and used for to your place audio applications. Two TA8215 ICs are used now in order to gain a 4 channel amplifier practice. The circuit is designed almost exactly in the role of for each the use diagram within the ICs datasheet. Pins 7 and 19 are the Vcc pins of the ICs inner integrated power amplifier stages and these pins are connected to the optimistic supply. Pin 9 is the Vcc pin in lieu of ICs interior preamplifier and it is additionally connected to the positive supply. 

TA8215 4 Channel Power Amplifier CIrcuit
Pins 13 and 14 are the domestic power amplifiers ground pins and they are fixed cool and connected to the ground. The in-house preamplifier’s ground pin (pin5) is connected to the regular ground through a 10 Ohm resistor which makes the input ground separated from the common ground by a resistance of 10 ohms and this improves the sound rejection. The 100uF capacitor workings in the function of a power supply de-coupler. The resistor networks connected to the output defenses of both amplifier improves the far above the ground frequency stability. The movable resistors (R3, R4, R12 and R13) facility as the volume controller intended for the corresponding channels.

Tuesday, September 27, 2016

HiFi Audio PreAmp Circuit TL072

A preamplifier (preamp) is an electronic amplifier that prepares a small electrical signal for amplification or further processing. A preamp is often placed close to the sensor to reduce the effects of noise (noise) and interference (radio frequency).HiFi Preamp used to increase the signal strength to drive a cable to the main instrument without significantly lowering the signal-to-noise (SNR).

Noise performance of the preamplifier is very important; based formula Friss, when the gain of the preamplifier high SNR of the final signal is determined by the SNR of the input signal and the noise figure of the preamplifier.

HiFi Audio PreAmp Circuit TL072 Schematic
HiFi Audio PreAmp Circuit TL072 Schematic
Non-Inverting preamp

Basic Component Selection and Functions
  • U1 is the TL072 IC OpAmp is used as a reinforcing component. IC specification is pretty good with low prices and adequate sound quality.
  • FET input type that has an extremely high input impedance.
  • R1 is a bias resistor to the U1. we can actually increase the value of R1 (in order to have a higher impedance) due to very high input impedance U1,
  • but this will also affect noise preamp (so higher).
  • R2 serves as a counterweight between the impedance-ins and + in. Impedance balancing will help lower distortion.
  • Its value is the result of parallel R3 || R4.
  • R3 and R4 is a negative feedback resistor, is used to measure the output signal and determine the strengthening of the value:
  • R4 / R3 + 1, ie 2x or 6dB.
  • If the value of R4 and R3 are too high then the nosie will increase, if the value of R4 and R3 is lower then the noise will be lower, but the load on the U1 will be higher and may cause increased distortion.
  • R5 serves to empty the C2 flows so as to reduce noise "bump" when the connector is connected.
  • R6 serves to prevent oscillation due to the use of the cable sheath is long (more than 2meter).
For creating an amplifier visit link this Power Amplifier Circuit

Headphone Amplifier uses 1 piece TL074 IC

Headphone Amplifier uses 1 piece TL074 IC to drive a headphone. You can use 9V battery to supply amplifier circuit.
So use two pieces of IC for use stereo.
Headphone Amplifier Circuit schematic
Headphone Amplifier uses 1 piece TL074 IC

Theoretically ,this amplifier has a maximum power of 200 mWpeak (100 mWrms) at 32 Ω load.
with a voltage gain of 7,6x (17.6 dB).

Buy a quality headphone philips and using Headphone Amplifier uses 1 piece TL074 IC

Monday, September 26, 2016

Dual Symmetrical Power Supply for Audio Amp

This Dual Symmetrical Power Supply is Perfect for powering up an audio amplifier or crossover filter etc. Power supply circuit just need four rectifier diodes and four electrolytic capacitors. There is also provision for six optional capacitors for reducing RF emissions. All these items are very easy and cheap. Power supply circuit schematic:
Dual Symmetrical Power Supply for Audio Amp
Recommended components:
C5,C6,C7,C8 = 2200uF 50V electrolytic capacitors.
C1,C2,C3,C4, = 100nF 50V ceramic capacitors.
C9,C10 =  10nF 50V capacitors.
D1.D2.D3.D4 = 1N5401 rectifier diodes.

PCB Layout Design Dual Symmetrical Power Supply for Audio Amp
pcb power supply amplifier

kit pcb power supply amplifier
You will need a dual-output transformer, maximum 2 x 25V to power the board. Because mains electricity is involved, we recommend this pcb and components is assembled by qualified DIYers only. Also for your safety, we recommend the PCB and transformer are installed in a secure enclosure. You can use this Power Supply circuit for power amplifier listing here :

Power Amplifier 400 Watt using IC741 and MJ2955/3055

Circuit Power Amplifier using IC741 for buffer stage, and final stage using Transistor MJ2955 and MJ3055 as much 3 set transistor. 

Output power about 400Watt RMS at supply voltage 34VDC assymetric. See circuit schematic power amplifier below :
Circuit schematic Power Amplifier 400 Watt using IC741 and MJ2955/3055
Schematic created on EasyEDA project if you have account EasyEDA
you can see clearly schematic and edit it here.
This power amplifier is simple to make it, you can apply power amp at home audio . Audio in is buffered by ic 741 , as a op-amp ic , but the driver i use it mje340 and mje 350 , in PCB layout using BD139 and BD140 you can change it. For better quality power amplifier ,Capacitor using 50V. Resistor using 1/2 Watt if no labeled. if you want to assemble it you can see this pcb layout power amplifier :
PCB Power Amplifier 400 Watt using IC741 and MJ2955/3055

Sunday, September 25, 2016

Advantages and Disadvantages OF Circuit AMPLIFIER OCL

Advantages and Disadvantages OF AMPLIFIER OCL Circuit
Many people use this type of amplifier because there are many advantages in comparison with amplifiers using IC (Integrated Circuit). But in fact almost the same sound quality, and even the risk of damage greater use OCL amplifier. In the process of assembling an amplifier of this type is very delicate high level if we're wrong little would be fatal for the other components, especially on the power. 

Other disadvantages of this type of amplifier should use sufficient cooling, especially the cooling material should really be able to absorb the heat generated from the transistor and would be better if given additional cooling as the fan mini. To maximize the cooling process should be toward the cooling breezes of the transistor directly so that the transistor is not easily damaged.

Excess amplifier types OCL is the outcome harder to make chest tightness. but it would be even better result if it is supported by means of manufacturing / assembly speaker box.

Besides being supported by a great resonance box, it would be great if supported by quality in good subwoofer. If you want to get the sound to your taste spull speakers you can replace yourself with your own assemblies, but the way the installation is also to be really precise. For those of you who are beginners should have to be careful in the process of assembling amplifier types OCL is because in addition to using three (3) flow, but sometimes tone control using two (2) current that can outwit us at the time of assembly, the more so if you use a transformer double. Another advantage of OCL amplifier manifold greater output and maximum compared to the others. 

Tips for those who are beginners: make sure the flow is properly installed, meticulous in seeing the symbol, not until there is a tool that attaches to cause surge currents, although in seconds the result is fatal and you have to buy a new component, do occasionally using components that have been used because of problems will arise little by little from components that have been used since to check the surge transistor that has been very difficult, it looks still good but because it has the characteristics it will quickly be easily damaged and could result in all the components were damaged.

TDA2030 For Active Speaker Super Bass

For those of you who want to have an active speaker super bass.  Although it is small but can put out powerful bass sound. However, if the financial condition of our rather dry so we try to make ourselves, but do not forget to wear a rule in the manufacture of boxes speaker. Active speaker TDA2030 For Active Speaker Super Bass is indeed small, but the results are amazing.

If only for home theater or home amplifier within the scope of this circuit can make quite a bass voice boomed. For this circuit you can see in the picture below:
TDA2030 For Active Speaker Super Bass

The speakers are used actually wear watt and impedance is small and power amp output is also small, but because it is supported by the rule-making cribs salon is right then the result is quite satisfactory

Guitar power amplifier circuit

This the guitar power amplifier circuit, using a single-rail power supply of about 60V and capacitor-coupling to the speaker (s). The advantage to the guitar amplifier circuit is very simple, even for relatively high power output, and certain built-in loudspeaker protection level, because the capacitor C8, preventing the supply voltage to be delivered to the speaker in terms of output transistors' failures. 
Guitar power amplifier circuit schematic :
Guitar power amplifier circuit schematic

The preamp is powered by a 60V rails same as power amplifier, which makes it possible to apply a two-transistor gain-blocks are able to provide about 20V RMS output. This provides the ability to excessive input is very high.

Saturday, September 24, 2016

Power Amplifier Super OCL 500W Circuit

This amplifier Super OCL 500watt rms with a maximum power supply voltage at the load 45vct 2x speakers. PA3600w on par with other assemblies amplifier.

Power Amplifier Super OCL 500W

SOCL 500 Watt

Circuit Schematic Super OCL 500W
SOCL 500 Watt circuit scheamatic

Power Amplifier Using
Inside and outside the room

Power supply ...
Transformer with a current strength of at least half of the nominal voltage, to compensate for a 4 ohm load 2x (4x speakers) such as stereo amplifiers professional standards, eg transformer 40Vct 20Amper. 40vct minimum supply voltage, if rectified would be more than 50vdc, transitor-power transistors will release energy (more life) if disuply with 50Vdc voltage (40vct = vac).

2x 500watt (12 ", 15") per mono block amplifier, speaker total 4 units to 1 stereo amplifier.
It is advisable to use a 500W powered speakers (12 ", 15") as much as possible,
is more effective in improving the gain of using a large speaker> 1.000Watt (18 ", 21") with the least amount.

Tansistor Final ...
Suggested use Sanken series 3 sets.
Too many final transistors without increasing the power supply transformer can weaken the thump of the bass and the sound is less stable, hoarse etc.

Carefully series Sanken many forgeries, for example Sanken 2SC2922-5DY (quality is unstable and does not correspond to the price). Transistor driver must also be original! If there is a problem such as a hoarse result, resistor 300 burning, etc. This may be because the component FALSE.

Resistors and capacitors do not really matter. The problem is electrolytic capacitors, Elko. Sorry average Elko Rubycon / marcon / Nichicon (original) is less suitable to be applied here, because he is more suitable work in the dc current, which is suitable for this is Elko brand nippon Chemicon (not all), and Elko another stable job at audio frequencies /air conditioning.

Almost all the native power amplifier assemblies only 500watt theoretically and practically
on paper and table test, but in the power of music power is transferred to the speaker only a few dozen watts! Proof: cool heatsink / no heat, sound is loud. Adjust the power speakers with a power amplifier used!

Characters and features:

  • Hifi fullrange with bass gain 2 ~ 4 times the usual amplifier. Effective for the production of such bas-class amplifier h & BTL.
  • Speaker leaves more stable, not too advanced and not too far back even if exposed to shocks bass, speakers and power transitror expectations more durable.
  • The values ​​of the components are set such that the power transformer is more efficient. Power transformer is not wasted, not turned into drone / wild signal / oscillation, etc.
  • Sound can travel long distances in the field due to consider the Doppler effect.
  • With the installation of the transformer model 2 below (test 2013), does not make the slightest hp signal when no sms / incoming call even though hp kept above the transformer, is one of the features, amplifier built-up not necessarily.

SOCL version ONSEMI TO-3:
To endure the speakers up to 4 units / ch,
Power Amplifier Super OCL 500W kit

Power Amplifier Super OCL 500W transistor final

Audio Low Pass Filter LM324

This is circuit schematic of audio low pass filter. By using this circuit for audio can  filtering just low output frequency. Based on IC LM324 for filtering audio signal input to low frequency output. Power Supply need 9V up to 15V DC. Using DC Regulated power supply for more effieciency audio filtering and more low noise output.

This is circuit schematic of Audio Low Pass Filter LM324

Audio Low Pass Filter LM324
If you have EasyEDA account visit here you can see schematic clearly and you can edit it.

Friday, September 23, 2016

1000W Mosfet Power Inverter Circuit

This 1000W Mosfet Power Inverter  motivation provide a very unwavering “settle Wave” Output Voltage. Frequency of process is indomitable by a pot and is normally fix to 60 Hz. Various “rotten the shelf” transformers can be there used. or else Custom wind your own on behalf of top results.

Mosfet Power Inverter Circuit

1000W Mosfet Power Inverter  circuit schematic

Further MosFets can be paralleled for senior power. It is recommended to encompass a “Fuse” appearing in the Power Line and to continually have a “Load connected”, while power is being useful. The Fuse must be situated rated by the side of 32 volts and must be aproximately 10 Amps for each 100 watts of output. The Power leads be required to be extreme sufficient wire to control this prohibitive Current take! appropriate ardor Sinks ought to be used on the RFP50N06 Fets. These Fets are rated on 50 Amps and 60 Volts. Other types of Mosfets can survive substituted if you desire.

here ARE Limitations! I get had numerous desires in favor of an Inverter for 1000 watts and Even supplementary. regretful I Don’t feel this is sound. by 1000 Watts and operating from a 12 Volt Source, the Input Current wish befall close to 100 AMPS. with the intention of would Require a HUGH Size of a Primary Wire.

Multi-channel audio systems

Multi-channel Audio
Multi-channel audio systems are widely used within novel sound campaign. The word “multi-channel audio” process with the intention of, the audio method can transpire accomplished of conduct multiple audio channels (more often than not called audio tracks) to rebuild the sound on a multi-loudspeaker setup.

Usually two digits separated by a decimal (.) end (2.1, 4.1, 5.1, 6.1, 7.1, and the rest.) are used to classify the various kinds of orator fix-up, this total basically depending on how many audio tracks are used. about audio systems solitary suffer a single channel (called monophonic sound otherwise single channel audio) or two channels (stereophonic sound or else 2.0 channel sound)
The initial numeral shows the quantity of primary channels (called satellite units), both of which are reproduced on a single presenter (these speakers are accomplished in place of use the frequency range from 100Hz to 22Khz), while the back up (decimal figure) refers to the presence of LFE (Low Frequency Effect), which is reproduced on a subwoofer.

Multi-channel audio systems

7.1 Channel audio Surround Sound systems

7.1 Surround Sound Systems
7.1 channel audio systems is the modified version of 6.1 channel and plus provide additional realistic experience than 6.1 setup. at home this organization splits the single rear-hub amp into private not here- and moral-rear surround. These systems are not a stanch discrete 7.1 channel system to the same degree 7.1 formats don’t at this time exist. In a true discrete 6.1 surround method, the back center surround attitude is separate from the surround not here (SL) and surround right (SR) positions. A 7.1 channel system uses   matrixes extended surround wherever the not here-back and right-back (rear-inside surround) multichannel are blended at once and stored. The assembly of a 7.1 setup is agreed voguish the Picture under.

7.1 Channel audio Surround Sound systems
7.1 Channel audio Surround Sound system

10.2 Surround Sound Systems

10.2 channel surround is the yet to come surround sound machinery so as to residential by THX corporation, the pet name itself, 10.2 is an cutting edge version of 5.1 tools but 10.2 is twice like mild as 5.1. concerning a 10.2 surround sound 14 channels are used. This includes five front speakers, five surround channels, two LFE and two heights, plus the addition of a instant associate-woofer. This equipment is considered as impending TRUEHD.The Diagram of a 10.2 TrueHD setup is publicized less than.

10.2 Surround Sound Systems
10.2 Surround Sound Systems

Thursday, September 22, 2016

"Tesseract" DIY Guitar Practice Amplifier is an LM386 - EasyEDA

Tesseract Guitar Practice Amp PCB
The EasyEDA "Tesseract" DIY Guitar Practice Amplifier is an LM386 based low power amplifier designed to deliver up to about 500mW into an
8 Ohm speaker when run from a 9V battery.
Tesseract can be heard on YouTube here:
The design given here - which includes a complete PCB design and Bill of Materials - is highly flexible and allows the several options in both the build and use of the amplifier.
As well as a clipping circuit that some other designs - such as the more well known Smokey, Little Gem, Ruby and Noisy Cricket - have incorporated, Tesseract has several unique effects features designed into it:
  • Selectable Bipolar or Junction FET input stage for different input overload effects;
  • Adjustable gain and clipping 'hardness' in the Distortion stage;
  • An adjustable fullwave rectifier stage, driven by the distortion output, that generates a type of fuzz and frequency doubling effect called 'Wreckage';
  • An optional low frequency oscillator stage to sweep the Wreckage effect;
  • A simple mixer to blend the 'Wrecked' and the 'Distortion' outputs;
  • Selectable, adjustable low or high frequency boost (a type of tone control);
  • An important aspect of the design is that all the features and FX can be tweaked for your delight and delectation.
  • Most features are also optional and can be wire linked out if not required without affecting the other functions.
  • The design could easily be modified to suit the LM380 2.5W or LM384 5W amplifier chips (although the Boost function would have to be omitted) or a range of other devices.
  • The design also includes a headphone output jack.
  • The PCB includes dual footprinting to simplify the choice of some of the components.
  • All parts (excluding the PCB) are available from:
    (Bitsbox can also supply suitable small switches, loudspeakers and battery holders or clips.)
    An alternative for J1 as an MPF102 is available from:
  • Simulations of the different stages of this amplifier - and a copy of the EasyEDA LM386EE spice model used in them - can be found here:
To order Tesseract PCBs direct from EasyEDA
Sign up for a free account at:
then click on 'Fork' or 'Open in Editor' in the upper right of this page and then click on theFabrication Output... button on the top toolbar of the PCB layout tab:
Then click on the Save To Cart button on the Add To Cart page:
To download Gerbers for 3rd party PCB fabrication
Click on 'Open in Editor' in the upper right of this page and then click on the Fabrication Output...button on the top toolbar of the PCB layout tab:
Then click on the Download Gerber Files button on the Add To Cart page:
  • Please note that this project is subject to the CC-BY-NC-SA 3.0 license. For more information please see:

Tesseract Guitar Practice Amp PCB

Tesseract Guitar Practice Amp PCB

Wednesday, September 21, 2016

1400 Watt High Mosfet Power Amplifier

This Power Amplifier based on Mosfet transistor , by using final transistor Mosfet IRFP250 10set this amplifier is very powerfull performance. Driver using MJE350. this power amplifier mosfet has ouput power about 1400W at 90VDC Voltage Supply. See mosfet power amplifier mono circuit :

Mosfet Power Amplifier circuit diagram 1400 Watt
1400 Watt High Mosfet Power Amplifier

See also High power amplifier

Mega Bass Circuit using 4558

The megabass circuit is a modified Baxandall tone control with no bass cut and no treble control. It boosts frequencies from about 30Hz to 160Hz can boost by 14dB.
Mega bass circuit Diagram

Mega Bass Circuit using 4558

  • The input capacitor can be replaced with a .01uf cap if you wish.
  • The 10pf capacitor is optional and will start rolling off everything over 15kHz. 5pf will double this to 31kHz.
  • The tone control requires a low impedence input. If you already have a low impedence input, the input buffer can be removed. However, the output is inverted.
  • The opamp is not critical. A 4558 would be just fine.
  • I do not show the parts for the +4.5 reference. Here is the +4.5 voltage divider I used.
  • IC A4558 Pinning IC A4558 Pinning
IC 4558 is a monolithic Integrated Circuit designed for dual operational amplifier.
  • Absolute maximum ratings of A4558 Ap-amp
  • Supply voltage VCC 20 or ±10 V
  • Differential input voltage VIND 20 V
  • Input voltage VIN ±10 V
  • Power Dissipation PD 300 mW
  • Operating temperature Topr -45 ~ +85 °C
  • Storage temperature Tstg -55 ~ +150 °C

Tuesday, September 20, 2016

Auto Car Motor Power Window Circuit

This Auto Car Motor Power Window circuit is working on simple timer circuit using transistor, How the Car Power Window work with automatic up and down for once toggle switch? its simple on Power Window using a motor to drive a power window regulator up and down. So the car window can auto move. If there is broken on the timer circuit, you can using this circuit.

Auto Car Motor Power Window Circuit
Workings of circuit:
This circuit works on a car battery voltage of 12 volts.
By giving the input voltage + is used in the power window buttons, go to the base of transistor D438 in the key once will be stored by the capacitor voltage. In a few seconds the transistor will work to control the relay. and relay functions to flip through the incoming voltage to the power window motor

2 X 250 Watt Power Amplifier Blazer St Plus

Power Amplifier Blazer St Plus 2 X 250 Watt

Power amplifier module plus 2×250 watts blazer St plus, has been using the original transistor SANKEN 2SC3858 / 2SA1494 and accompanied with the power supply so that you can simply plug in the AC voltage from the transformer 42 Volt CT

Power Amplifier Blazer St Plus 2 X 250 Watt Circuit Diagram
 Power Amplifier Blazer St Plus 2 X 250 Watt Circuit Diagram

Output power max : 500 Watt RMS into 4 ohms, 300 watt RMS into 8 ohms
Frequency Response: 7Hz to 56Khz at +0dB -3dB
Input Sensitivity: 1,2 volt RMS (for 300 Watts into 4 ohms)
Harmonic Distortion: 0,06% from 20Hz to 20Khz, Typically 0,0004%
Signal to noise ration: 122dB unweighted (20Hz to 20Khz), 122dB A-weighted
Damping Factor: 200 (for 8 ohms loads)
Stability: Unconditional

Add Silicon Grease between the heatsink with elbow
Use a good quality heatsink

You can buy this module amplifier at audiorakitan
 Power Amplifier Blazer St Plus 2 X 250 Watt Circuit Diagram

Monday, September 19, 2016

400Watt Power output - High Power Mosfet Amplifier

High Power Amplifier Mosfet 400W . These amplifiers circuit can be used for virtually any application that requires high performance, low use Noise, distortion and excellent sound quality. Examples would be subwoofer amplifier should FOH stage Amplifiers, surround a canal a very powerful sound amplifier, etc. The 400W MOSFET-amplifier has four key stages of amplification. We are looking to start any Phase appropriate detail.

Circuit Diagram 400W MOSFET Amplifier
400Watt Power output - High Power Mosfet Amplifier

As the name suggests All Q ,C and ZD the Bias and buffer phases. Its main goal is to provide a stable MOSFET Gates and offset voltage and the voltage buffer amplifier stage of the High Resource capacity. What would have without the phase response and the effect Slew rate is indeed very bad. The flip side of the coin is not the extra step Introduction of an additional dominant pole in the amplifier feedback loop.

Also to what the name suggests this stage converts the voltage developed in the VAS and provides all the amps required to drive at 8 or 4 ohms. 2-ohm loads are possible for several minutes at a time. In fact, I have tested more than 1600 1kW amplifier Watts RMS at 2 ohms. But that would not be recommended as a long-term exposure at all. If it is higher than the figures of the STI-amp. Power to the AV amplifier 800 The components of the power for this amplifier are as follows, and are favored A channel or a power module alone. 1 toroidal transformer with a rating of 1kVA. Primary windings are made to fit.

400W Amplifier with 2N3055/MJ2955

400W power amplifier built using two couples of power transistors that are TIP31 with TIP32 and 2N3055 with MJ2955. These transistors are well known and widely used for the amplifier circuit and power supply circuit.

Take a note that you must use aluminium heatsink (and a fan) to prevent over heating on the transistor (2N3055/MJ2955).
400W Amplifier with 2N3055/MJ2955

This circuit require dual polarity power supply. You may use this dual polarity power supply circuit. Use 5A center tapped amplifier with voltage output of 25V-0-25V or 32V-0-32V. The capacitor type is electrolytic capacitor, recommended value: 4 x 6800uF/63V (minimum). 10000uF will be better.

200 Watt Power Amplifier STK4050 - STK4046

Amplifier circuit with IC STK is tough and good quality. In this article an amplifier circuit with IC STK another base. Power "Amplifier 200Watt By STK4050" is an audio amplifier of the STK family with 200Watt power. To create a power amplifier with the STK4050 IC is not require many external components.

Power Amplifier uses symmetric 30Volt power supply system. Power Amplifier Circuit With this STK4050 can reproduce the power 200 Watts at 8 Ohm load spaker. In making Power Amplifier 200Watt With this STK4050 do not forget to provide adequate heat sink for the IC STK 4050 in order to avoid overheating.

Schematics Amplifier STK4050-STK4046
Circuit Diagram Amplifier STK4050-STK4046

STK PCB Layout Amplifier
PCB Layout Amplifier

Circuit Power Supply for Power Amplifier 200Watt By STK4050 been displayed in one image  above. IC STK 4050 in this series there are several types on the market including STK4050II, STK4050V and STK4050.
STK 4050 IC
Buy IC STK4050 on ebay visit here STK4050II-Original-Pulled-Sanyo-Integrated-Circuit

And below is a list of STK ICs are used for a good quality amplifier.

Datasheet STK IC Amplifier
Datasheet STK IC Amplifier

TDA2030 Power Amplifier for Amp Subwoofer [ DIY Kits ]

TDA2030 Power Amplifier for Amp Subwoofer
This is DIY kit for power amplifier using IC TDA2030 , that you can easily assembling for subwoofer amp. There are many power amplifier circuit using TDA2030 but this power amp circuit its more enhancing low frequency. So this power amp can drive subwoofer speaker. And if you buy for DIY kits you can get , pcb , all component you for this power amplifier. You just soldering components into pcb board. And you have a Subwoofer Amp from IC TDA2030. See the circuit diagram, and pcb layout :
TDA2030 subwoofer power amp circuit diagramPCB TDA2030 Power Amplifier for Amp Subwoofer

Features TDA2030 Power Amplifier for Amp Subwoofer :
1.Operating voltage: 9-24VDC(recommedded DC12V,this voltage to the heat sink requirements are very low)Maximum supply voltage of this board is actually up to 40V,but you need to change the board's own electrolytic capacitor C1,the capacitor voltage value is higher than the supply voltage can be use)
3.Total harmonic distortion: 0.08% (Po = 0.1 to 14W, RL = 4Ω)
4.Static current: about 25mA
5.Speaker Impedance: 4Ω-8Ω
6.Output Power: 18W
7.SNR: 94dB-106dB
8.Heat: the higher voltage supply ,the greater volume, the higher the heat.
DIY Kit subwoofer power amp
Buy Diy kits tda2030 power amplifier module amp subwoofer from Ebay

Sunday, September 18, 2016

3 Stages Driver 1000W Mono Power Amplifier [ KIT ]

3 Stages Driver 1000W Mono Power Amplifier [ KIT ]
3 Stages Driver 1000W Mono Power Amplifier

The power amplifier uses three-tier architecture early gains. This is a standard module using transistor amplifier finals by 1 set (2 transistors), but you can add them as needed to add a bit of final amplifier circuit. This module is intended for those of you who are already experienced in assembling power amplifier

Driver 1000Watt mono Power amplifier

Kit Driver 1000Watt mono Power amplifier is very strong performance output, you can use the final transistor using Sanken 2SC2922 and 2SA1216 by 1 set or add 2 set. By using three stages driver more efficiency and more powerfull power amplifier. If you interest with this kit 3 stages driver you can buy it from : 3 Stages Driver Power Amplifier

Saturday, September 17, 2016

X10 Blazer Power Amplifier 1000 Watt Mono [ KIT ]

X10 Blazer 1000 Watt Power Amplifier accompanied by highly qualified components, consisting of 5 sets (10 pieces transistor) final transistor SANKEN original and charming using fiber PCB.
Blazer X10 1000 Watt Power Amplifier is also equipped with a speakers protective circuit using OMRON relay, so you do not need to add speakers protector separately.
Advantages X10:

X10 Blazer Power Amplifier 1000 Watt Mono

Specification X10 Blazer 1000 Watt Power Amplifier:
  • Output power: 1000 watts RMS into 4 ohms, 800 watts RMS into 8 ohms
  • Frequency Response: 7 Hz to 56 Khz at +0 dB-3dB
  • Input Sensitivity 1.2 Volts RMS (for 300 watts into 4 ohms)
  • Harmonic Distortion: 0.06% from 20 Hz to 20Khz, Typically 0.004%
  • Signal to noise ration: 122 db unweighted (20 Hz to 20 Khz), 122 db A-weighted
  • Damping factor: 200 (for 8 ohms loads)
  • Stability: Unconditional
Buy X10 Blazer Power Amplifier 1000 Watt Mono : audiorakitan 

Kit 5.1 Channel Audio Processor Surround Decoder

5.1 Channel Audio Processor Surround Decoder Pro Logic System (Matrix Sound)
Kit 5.1 Channel Audio Processor Surround Decoder

Kit 5.1 Channel Audio Processor Surround Decoder Description

5.1 Channel Audio Processor Surround Decoder functions to process the stereo signal into surround sound pro logic 5.1 channel (2 Front, 2 Rear, 1 Center and 1 Sub woofer). With 5.1 Channel Audio Processor Surround Pro Logic Decoder will make the sound come alive like a professional home theater sound system for the distribution of rich sound, and each successive life like a real sound condition.

You can just add some amplifiers for surround processor fed with this. Surely amplifier used is a 6 channel amplifier, among others: 2 Front, 2 Rear, 1 Center and 1 Subwoofer

Module 5.1 channel audio surround processor pro logic decoder using IC matrix produced by NEC with C1891CY series, and not using echo systems like MN2005/MN2008 or PT2399.

You need this Kit 5.1 Channel Audio Processor Surround Decoder ?Buy it here

Audio signal activated relay

Audio signal actiated relay , This Relay remains dormant until the op-amp activates upon sound via the electret-microphone.   I only tested the 2-wire type. The input stage is a regular off-the-shelf 741 operational amplifier and connected as a non-inverting follower audio amplifier.
Audio signal activated relay
  • Gain is approximately 100 which you can raise by increasing the value of R2. 
  • The amplified signal is rectified and filtered via C3,D1/D2, and R3 to an acceptable DC level D1 and D2 can be any signal diode like 1N914, 1N4148 or the NTE519. 
  • Cx can be anything with a value of 6.8 to 22µF. Adjust if necessary. Cbias is to DC-couple the mic to the input of the 741. Q1, the 2N2222 or 2N3904 is a general purpose NPN transistor and is not critical. The NTE123A will work too.
  • Potentiometer R4 is used to set the audio level to a desired sensitivity value to activate the relay via transistor Q1. Diode D3 is mounted over the relay coil to absorb sparks when the relay opens.
  • Cathode goes to ‘+’.
  • The op-amp configuration in this particular drawing needs a dual voltage power-supply which can be made from two 9 volts alkaline batteries.

Friday, September 16, 2016

600 Watt Mosfet Power Amplifier with PCB

Here is a circuit Power Amplifier with output power of more than 600 Watt speakers with impedance of 4 Ohm. Power Amplifier circuit with high power uses n-channel MOSFETs 6 in the output stage alone is giving about 400Watt power. And to make more than 600Watt need to use 12 N-Channel MOSFETs. One of the construction sequence to produce more output power of 900W using 12 IRFP460 MOSFET. Here is a Power Amplifier Circuit Diagram, and the Power Supply is suited for this amplifier. I also include a PCB Layout Design for the power amplifier and its power supply, you can see below.

600 Watt Mosfet Power Amplifier Circuit Diagram
600 Watt Mosfet Power Amplifier Circuit Diagram
PCB Layout Design 600 Watt Mosfet Power Amplifier
PCB Layout Design 600 Watt Mosfet Power Amplifier

Power Supply for 600 Watt Mosfet Power Amplifier
Power Supply for 600 Watt Mosfet Power Amplifier
Power suplly PCB Layout Design 600 Watt Mosfet Power Amplifier
Power suplly PCB Layout Design 600 Watt Mosfet Power Amplifier

800W high power amplifier using MOSFET

This 800W high power amplifier mosfet can be used for practically any application that requires high power, low noise, distortion and excellent sound. Examples would be Subwoofer amplifier, FOH stage amplifier, One channel of a very high-powered surround sound amplifier etc.

800W high power mosfet amplifier circuit diagram

For detail explanation about how this circuit works include the large schematic diagram, power supply schematic diagram and complete component listing,  source :