Tuesday, March 13, 2018

Power Amplifier 1000W Rocky TEF

Hello friends, this time I will share project about Power Amplifier with the name of Rocky TEF power amplifier with output power up to 1000 Watt RMS. With high power category, this amplifier is capable of controlling 12Inch speakers A total of 4 even 6 pieces with each speaker power of 300W. The following is a project of making this Rocky TEF power amplifier, starting from circuit scheme, PCB Layout, and also there is video assembly, also testing power amplifier.

Power Amplifier Circuit Diagram:
Power Amplifier 1000W Rocky TEF
Component List:
R1= 47K
R2, R5= 1K8/1W
R3= 33K/1W
R4= 15K
R6= 27K
R7= 1K
R8= 47K/1W
R9= 6K8
R10= 10K
R11, R12, R13, R14= 100R/1W
R15, R16 = 22R/1W
R17, R18=220R/5W or 470R/2W x2 Parallel
R19, R20= 2R2/W
R21, R22= 120R/5W or 220R/2W x 2 Parallel
R23, R24= 22R/2W
R25, R26= 10R/5W
C1= 10uF/50V
C2= 120nF
C3, C4= 220uF/80V
C5, C6= 120pF
C7, C8= 470pF
C9= 100nF/275V
D1= Diode Zener 33V
D2,D3,D4= 1N4007
Q1,Q2,Q3,Q4= MPSA92/ 2N5401
Q5,Q6,Q7,Q9= TIP31/ 2SC4793
Q8= TIP32/ 2SA1837
Q10, Q12, Q15= 2SC5200
Q11, Q13, Q14= 2SA1943
L1= 10uH
J1= Input
J2= V+ 45 - 70V DC
J3= V- 45 - 70V DC
J4= Emitter
J6= Base +
J7= Base -
SP= Speaker Output

PCB Layout Design Power Rocky TEF 1000W
Power Amplifier 1000W Rocky TEF Rockola Expandable
PCB Size: 120mm x 80mm

Making PCB Power Amplifier Rocky TEF [VIDEO]

Wednesday, March 07, 2018

Subwoofer Filter NE5532 Schematic PCB

On this occasion, I will share the circuit for subwoofer filters in this subwoofer filter different from the previous filter or subwoofer module. In this circuit only use 3 pieces of Op-Amp IC which we usually encounter in tone control circuit, active crossover, a filter circuit, another preamp circuit that is IC NE5532. This IC is very popular so I will apply it to this filter subwoofer circuit and its circuit schematic.
Subwoofer Filter NE5532, Bass Booster
In the above circuit, there are three settings for the subwoofer filter frequency, where the frequency can be filtered from 50Hz up to 300Hz. This frequency setting is on a 50K stereo with a FREQ label, then also there for subwoofer phase settings that we can use ranging from 0 to 180 degrees. Phase settings contained in Phase 100K pot. then the last is the level setting or also can be called the volume subwoofer, which is used to set the amount of voice signal to be transferred to a special power amplifier bass/subwoofer. Level settings contained in the 50K pot Level.

Buy NE5532 IC for this filter circuit from allchips.ai, see image and link below:
To facilitate the making of this filter subwoofer circuit I also share PCB Layout design below, with the size of PCB 107mm x 69mm.
PCB Layout Subwoofer Filter NE5332

DIY Subwoofer Filter Circuit

This Subwoofer Filter NE5532 is tested with Power Amplifier SOCL 504, see this video:

Sunday, March 04, 2018

Speaker Protector 3 Transistors

This speaker protector circuit serves to protect the loudspeaker from the DC voltage that flows from the power amplifier, especially from the type of OCL power amplifier. In fact the working system of the protector speaker circuit is simply delaying the connection between the amplifier and loudspeaker output for a few seconds. When the power amplifier is first turned on, there is usually a momentary voltage surge at its output. The problem is this surge voltage is a DC voltage which is of course dangerous when it flows on the loudspeaker. Below the circuit diagram of speaker protector it's using 3 transistor.
Speaker Protector Circuit 3 Transistor

82R x 1, 1K  x 1, 8K2 x 2, 10K x 1, 47K x 2, 68K x 1, 180K x 1
100uF/35V x 4
1N4148 x 2, 1N4001 x 7, LED x 3
Relay 8 Pin DPDT
Transistor & IC
7812 x 1, 2N5551 x 3
PCB Layout Design:
Speaker Protector PCB Layout
The workings of this protector speaker circuit is as a delay or also timer for the speakers that will connect to the amplifier when pwoer amplifier is turned on, as I have explained above. and the above circuit is used for stereo channel which only use 3 transistor as timer controller, and also not less important is the capacitor. If you want to change the working speed of the timer in the circuit you can replace the capacitor 100uF/35V near the 68K resistor, besides you also change the resistor itself. If the capacitor value gets bigger and the resistor gets smaller, the timer will longer work for the relay, and vice versa.

Video Assembling

Friday, March 02, 2018

4500W High Power Class-D Amplifier D4K5

This High Power Amplifier circuit is a class D power amplifier, which has a high enough power to generate 3000W of power at 4 Ohm impedance - and also more power up to 4500W at 2 Ohm impedance. This Power Amplifier can generate great power if given enough power supply. For example, you can use 30A transformer with 100V symmetric voltage.  Here is the circuit scheme of High Power Class-D Amplifier D4K5:
Power Amplifier Class D D4K5 4500W Circuit Diagram
View larger schematic image here: Power Amplifier Class-D D4K5

Component List
R1, R3, R4, R9, R13, R18, R19, R20= 1K
R2, R16, R39= 100K
R5, R6= 10R
R7, R8=6K8/2W
R10, R21, R26, R27=4K7
R11, R17=6K8
R14, R15=4R7
R22, R23, R24, R25, R31, R33=47R
R28, R29, R30=0,1R/2W
R36, R38=22R/2W
RV1=10K Trimpot

C3, C4=1N
C7, C9, C11, C12, C13, C15, C16, C18, C19=100N MKP
C10, C14, C17=100uF/16V
C21, C22, C23=220N/475V
C24, C25, C26=470uF/180V
C27, C31, C33=100N/275V
C28, C29, C30=470uF/180V

D1, D2, D5, D10, D11= 1N4148
D3, D4= ZD5V6
D6, D18, D19= MUR460
D8= ZD5V6
D12,D13,D14,D15,D16,D17= 1N5819

Q1= 2N5401
Q4, Q6= BD139
Q5, Q7= BD140
Q8, Q9, Q10, Q11, Q12, Q13= IRFP260

U1= TL071
Q2= CD4049
Q3= IR2110
U2= NE555
U3= LM311
Class d power amplifier circuit
ir2110 irfp4227 mur460 mur860 cd4049 tl071

The Power Amplifier is using view components and this power amplifier include OCP, DCP. And using 6x N-Channel Power Mosfet. You can use IRFP260, IRFP4227, IRFP4242 and others. If you want to make this power amplifier, see the following PCB Layout Design
PCB Layout Class D 4500W power amplifier
View larger PCB Layout Design: PCB Class-D D4K5

How to make Class D Power Amplifier [VIDEO]

High Power Amplifier Test Class D 

Friday, February 23, 2018

Subwoofer Amplifier with Power SOCL 500W

In this project, I will make a special power amplifier for the subwoofer speaker that I use for a power amplifier circuit that is Power SOCL 500W which use 2SC5200 and 2SA1943 final transistor 1 set/pair. Then for my subwoofer preamp use 4558 subwoofer filter/ 4558 subwoofer module. For power amplifier and subwoofer filter, each requires different power supply voltage. This power amplifier can be supplied with power supply from 25V to 63V DC Symmetrical. And for my subwoofer preamp circuit use 15V regulator power supply using IC 7815 and 7915

The power supply of subwoofer preamp needs stable starting from 12V to 15V recommend from me. Above 15V, the filter subwoofer circuit can generate buzzing noise or even damage the IC 4558. It is recommended to use 12 or 15 Volt regulator power supply, which will make stable voltage so good for sound and component itself. The following circuit scheme for subwoofer power amplifier using SOCL + preamp subwoofer.
Subwoofer Power Amplifier Circuit

In the circuit scheme to get more details the circuit please click the link that is in the first paragraph. For the circuit connection, you can see in the schematic above, there is a power supply voltage connection, where the power supply for the preamp subwoofer is taken from the output of 7815 and 7915 while the input of the regulated power supply is taken directly from the symmetric voltage of the power amplifier. You can take the voltage + and - only, while the ground is connected to all circuits.
15V Regulated Power Supply Video Schematic, PCB design

Wiring Circuit for PCB
Power SOCL 500W Subwoofer Amplifier

For input sound signal output that enter from the media player, go first to the subwoofer filter circuit and will be forwarded to the power amplifier, so the output of this SOCL power amplifier becomes a low tone which is good for subwoofer speakers.

This subwoofer power amplifier circuit is very satisfactory, which can control 12-inch subwoofers with ease. See the following SOCL power subwoofer amplifier videos, making amplifier and test with subwoofer speaker.

Subwoofer Amplifier with Power SOCL [VIDEOS]

Wednesday, February 21, 2018

Clip Indicator for Power Amplifier

Clip Indicator for Power Amplifier Circuit
There are many indicator clip circuit on the internet, with various models and design, starting from the easy to the hard. But in this article let us discuss the circuit of clip indicators that are easy and simple to be made with the advanced function of the clip indicator itself.

Clip Indicator power amplifier is a tool for detecting limits or clipping of audio signal power amplifier. Why should be installed clip indicator tool? Actually, this is the accessories and additions to make the power amplifier, so it is not installed is not a problem. I think this Clip Indicator Circut is very important because we can monitor the maximum limit of the out power amplifier so there will be no overdrive that can cause the sound broke and damage the speakers.

Clip indicator circuit is very simple and we can make it yourself easily and cheaply. Below is a circuit diagram of indicator clip for power amplifier:
Clip Indicator Power Amplifier
Component List
R4, R5=15K
D1=LED (Green)
D2=LED (Red)
D3=LED (Yellow)
D4, D6=1N4002/1N4148
D5=ZD 15V 500mW
J1=1: Ground 2: Input 3:+V Amplifier
Q1, Q2=C945/C828

PCB Layout Design Clip Indicator Power Amplifier
Clip Indicator PCB Design
Download link: 

How to Connecting Indicator Clip Circuit
This circuit requires a supply voltage that we can take from a positive supply power amplifier, so do not need additional power supply again. For clip indicator connection position on PCB power amplifier. My power amplifier PCB take example use PCB power Yiroshi Amplifier. For other PCB power I think it same, just different position of the layout only. Here is the image clip indicator connection on PCB power.
Clip Indicator Connecting circuit

The ground terminal of the PCB Clip Indicator is connected to the ground amplifier. Then Input Clip Indicator is connected to Output Speaker Amplifier. And for V + from clip indicator connected to voltage V + power amplifier. Led Signal detects incoming audio signal, Led Power indicates Power On and for Led Clip indicates output from power amplifier overdrive or maximum limit.

Monday, February 19, 2018

Power Amplifier Micro Driver

This time I will share about the power micro driver or super mini power with great power for the driver. This power circuit is capable of up to 75V DC symmetrical, Where this micro power amplifier can produce incredible power up to 1000W if properly coupled and using a good power supply is minimal to big power out, the current intended for this power is 20Ampere, although the power amplifier is quite simple with a less complex circuit schemes, which you can see in the picture below and see also the PCB Layout Design:

Power Amplifier Micro Driver Circuit Diagram
Power Amplfier Micro Driver Circuit Diagram
Component List:
R1= 100K
R2,R13= 2K2
R3, R5, R10= 100R
R4, R8, R9= 10K
R6= 470R
R7= 33K
R11, R12= 220R
C1= 100N
C2= 100uF/100V
Q1= C945
Q2= C1815
Q3, Q7= MJE340
Q4= A1837
Q5, Q6= TIP2955
Q8= C4793
Q9= TIP3055
J1= Audio Input
J2= Audio Output/ Emitter Final Transistor
J3= VCC (-) 45V-75V DC
J4= B (-) FT
J5= B (+) FT
J6= VCC (+) 45V-75V DC
Prototype Amplifier VIDEO
The circuit above is the only driver circuit so you have to add the final transistor as 2sc5200 2sa1943 10set much or more to add more power output. Or see final transistor power amplifier list.

Here for PCB layout that can be used as I design and later made to the size of 85mm x 62,5mm.
PCB Layout Design Power Amplifier Micro
Power Amplifier PCB Layout micro driver
8.5cm x 6.25cm

Saturday, February 17, 2018

High Power Amplifier Matrix 1.4

Power amplifier circuit this one is a circuit of power amplifiers with a high power output category. This circuit is called the power amplifier matrix with version 1.4 designed by Heru Himawan Tejo Laksono, this power has a character flat voice with low DCO (DC Offset) and low THD (Total Harmonic Distortion), it's very suitable for use in the room or outdoors. Below the circuit schematic of power amplifier driver Matrix 1.4:
 Power Amplifier Matrix 1.4 Circuit Schematic
Component List
RV1,RV2_____________10K Trim
J1___________________Audio Input
J2___________________VCC- 90V
J4___________________VCC+ 90V

Before you make PCB and assemble this power amplifier I will explain a little how to setting DCO and BIAS Power Amplifier on the schematic above that which is marked in blue for DCO (DC Offset) and red for BIAS Voltage.

Before stepping on how to setup DCO and BIAS power amplifier, it would be better if you first met these two terms. Maybe for the audio experts already understand this term, but it never hurts me to discuss again this term. Because these two terms are closely related to our power amplifier and very influential and determine the good quality of the output power amplifier that we produce. Maybe all this time we can only assemble power amplifier can sound, have stopped there. It turns out that there are many variables in the power amplifier that we can set in order to get the best sound quality. Not all power amplifiers have DCO and BIAS settings. 

But actually, from all the power amplifier circuit, there must be a DCO and BIAS. So why is there any power that does not have VR DCO and its VR BIAS? Actually, it exists, but already in the patent set or has been fixed with a certain value with the maximum results according to the manufacturer. The goal is to be safe and not in the brain-tweaking again and live just plug the sound directly, of course, this is very profitable for the assemblers, rather than having to struggle first for DCO and BIAS settings.

DCO (DC Offset)
DCO or DC Offset is the DC voltage that comes out on the speaker output power amplifier. The excessively high DC voltage that comes out in the speaker output can be very dangerous and can cause our speaker's spool to burn. Therefore the DC voltage at the speaker output should be avoided. Most large-wattage power amplifiers use dual or symmetrical voltage (positive-ground-negative) and connect the amplifier's output directly to speakers without capacitors. Output amplifier may contain DC voltage although small and not dangerous for a speaker. The DC voltage at the output of this amplifier is called DC offset.

DCO Setting
Where potency RV1 10K is used to adjust the DC offset on the output line to the speakers to get DC offset close to 0 volts or must be below 20 mV. How to use multimeter set scale on DC voltmeter in DC range of 2.5 volts range. Then connect the red probe to the speaker output and black probe to ground or CT. Then set VR P1 to get the lowest DC offset (close to zero or below 20mV).

BIAS Amplifier
Then about BIAS power amplifier. There are several opinions about this. Some say BIAS is the magnitude of the final tr collector current and some say BIAS is the voltage between the base and the emitter or the base and base of the final transistor pair. And there is also a voltage measurement on both the tr driver base. So there are several kinds of measurements for this BIAS. And there are also some measuring techniques in another way to check this BIAS parameter.

BIAS Setting
Where RV2 10K is used to set BIAS on the power amplifier. How to use multimeter set of 500mA scale. Then disconnect the VCC + cable and connect the series. For connections are red probes connect to VCC + Elco power supply. And black probe connect to VCC + pcb power amplifier. Turn on the power amplifier and set it until the multimeter points to 50mA. You can check on the VCC voltage path as well. 
With the reverse connection ie red probe to VCC- PCB power amplifier and black probe connect to VCC- power supply Elco. To produce a more quality sound output can be set BIAS up to 120mA. But the bigger the Bias current the better the audio quality and the risk is the power amplifier will get hotter. Then you should give the heatsink enough and given fan or fan as an additional cooler, so as not to over heat. In fact you can set Bias current up to 250mA, provided that the resulting offset DC remains close to zero, it will remain safe with the risk of more heat power.

After you understand a little explanation above, just let's make this power amplifier by using PCB Layout design below with size 13cm x 6.5cm:

PCB Layout Design Power Amplifier Matrix 1.4

PCB Layout schematic design power amplifier matrix

Power Amplifier is a driver that is not fully maximal amplifier to operate, you must add the final transistor again to be more powerful, for how you can visit this page: Parallel Final Transistor Power Amplifier

Saturday, February 03, 2018

Mini Amplifier with High Power Output

Hello dear friends, I share a post about mini power amplifier circuit, Yea this is mini and simple power amplifier using the transistor and a final transistor using 2SC5200 and 2SA1943. but you make no mistake, despite the simple power amplifier designed for output power should not be underestimated. Mini power amplifiers are capable of powering up to 300W high power output amplifier if properly coupled using good components and a qualified power supply.

Below the circuit diagram of Mini Power Amplifier 300W:
Mini Strong power amplifier circuit diagram
Component list:
R1               = 56K
R2, R5        = 100R
R3               = 20K
R4               = 1K
R6, R10      = 22K
R7               = 2K7
R8               = 100K
R9               = 2K2
R11, R12     = 0,1R / 3W
C1               = 1uF nonPolar
C2               = 100pF
C3               = 120pF
C4               = 220uF/50V
C5               = 47uF/100V
Q1, Q2        = BC556
Q3,Q4         = BC546
Q5               = BD139
Q6               = BD140
Q7               = 2SC5200
Q8               = 2SA1943
FU1,FU2     = 2.5Ampere
D1, D2        = 1N4148
D3, D4, D5 = 1N4007
J1                = Audio Input
J2                = Speaker Output
J3                = +42VDC
J4                = -42VDC
J5                = GND

PCB Layout Design Mini Power Amplifier 
PCB Layout Design Mini Strong Amplifier

Mini strong power amplifier PCB Layout design
PCB Size 6cm x 7cm

Thursday, February 01, 2018

1000W Power Amplifier 2SC5200 2SA1943

Hello, all royal visitor elcircuit.com, in this post I will share a post about the 1000W mono power amplifier using 2SC52000 transistor and 2SA1943 as the final transistor. In this 1000W power amplifier has a transistor amplifier configuration with emitter commons. A little explanation of the emitter commons reinforcement which means is a circuit with emitter pins connected together. In the emitter common configuration, base transistor pins are used as inputs while the collector pin section is used as output.

And the following is the circuit along with a list of components of the 1000W Power Amplifier:
1000W Power Amplifier Circuit Diagram 2SC5200 2SA1943

Component List
R1,R6                                                    = 2K2
R2,R7                                                    = 22K
R3                                                         = 1K
R4                                                         = 470R
R5                                                         = 4K7
R8                                                         = 150R
R9                                                         = 47K
R10,R12                                               = 330R
R11                                                       = 47R
R14,R19                                               = 47R / 3W
R15,R16,R17,R18                                = 47R
R20,R21,R22,R23,R24,R25,R26,R27 = 0,22R / 3 -5W
R28                                                       = 10R/ 3-5W
C1,C5,C6                                              = 100pF
C2,C3,C7,C10                                      = 100N
C4                                                         = 220uF/50V
C8,C9                                                   = 1N
Q1,Q2,Q3                                             = C1845
Q4                                                         = B560
Q5                                                         = D438
Q6                                                         = TIP41/ TIP31
Q7                                                         = TIP42/ TIP31
Q8,Q9,Q10,Q11                                   = 2SA1943
Q12,Q13,Q14,Q15                               = 2SC5200
J1                                                          = Audio Input
J2                                                          = Speaker Output
J3                                                          = -45V up to -90V DC
J4                                                          = +45V up to +90V DC
GND                                                     = Ground / CT

PCB Layout Design 1000W Power Amplifier 2SC5200 2SA1943:

PCB Layout 1000W Power Amplifier Circuit

1000W Power Amplifier PCB Layout Design

Transistor amplifier with common emitter configuration is one of the most widely used configurations compared to a common base and common collector, Whether it is for audio, video, high-frequency amplifier, and others. This is because the amplifier with common transistor emitter configuration will amplify the current and voltage simultaneously.

The input signal to the output on the common emitter is reversed phase. Thus making it more powerful power amplifier, and to discharge power up to 1000W Power Supply will require a capable, if not then the power will be a useless or wasteful component when compared with a good power supply. For example, the power supply is used at least 10A 55V. And to add more power you can upgrade the final part of 2SC5200 and 2SA1943 transistors into more. Thank you and Good Luck.

1000W Power Amplifier DIY