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

Tuesday, January 30, 2018

Active Surround Sound Circuit

Listening to the sound of music or watching action films will definitely feel more sensational if the add this Active Surround Sound Circuit because this is a circuit that is suitable to be paired with various audio devices. This circuit can convert the sound source from stereo media into 4 output channels (Left, Right, Rear Left, Rear Left), So you can listen to sounds from 4 different sound corners. You can also upgrade this circuit to 4.1 channel by adding a subwoofer filter paralleled with this circuit so you can add speaker subwoofer and amplifier to add more booming bass sound. Below the Active Surround Sound circuit diagram include regulated power supply 12V.

12V Regulated Power Supply Circuit Diagram
Component List:
R1,7                                = 47K
R2,8,13,14,18,19,23,24  = 100K
R3,6,10,11                      = 3K6
R4,9                                = 4K3
R5,17                              = 3K
R15,16,20,21                  = 27K
R17,22                            = 20K
C1,8                                = 47nF
C2,7                                = 8,2nF
C3,6                                = 39nF
C4,5                                = 220nF
C9,10                              = 1000uF/25V
C11, 12                           = 100uF/25V
C13,14,15,16                  = 100nF
U1,2                               = RC4136 / TL075
U3                                  = 7812
U4                                  = 7912
D1,2,3,4                         = 1N4001
J1,J2                              = Audio Input L/R
J3                                   = Rear Right
J4                                   = Right
J5                                   = Rear Left
J6                                   = Left Output
J7 Pin 1,2,3                    = 15VAC, CT, 15VAC
J8 Pin 1,2,3                    = +12VDC, GND, -12VDC

PCB Layout Design Active Surround Sound Circuit
PCB Size =  6,7 cm x 13,4 cm
See also 5.1 Home Theater using Gainclone Amplifier.

Friday, January 19, 2018

800W Power Amplifier Circuit

This is one of the power amplifier circuits with high power, capable of controlling some 12inchi size speakers in one circuit of this power amplifier. This power amplifier circuit is bothered easy, but it will be easier because we will share the circuit diagram and PCB Layout.

800W Power Amplifier Circuit Diagram
800 Watt Power Amplifier Circuit Diagram
Component List
Q1=2 x 2N5401

In the circuit above use Sanken final transistor or also use Toshiba 2sc5200 / 2sa1943. To parallel the final transistor you can visit this link: Booster Amplifier circuit ( Transistor Final ). Power Supply circuit using 45V-75V DC Symmetrical with 10 Ampere or better current ratings.

Below the PCB Layout 800W Power Amplifier Circuit 
PCB Layout 800W Power Amplifier

PCB Layout 800W Power Amplifier Circuit Diagram

Wednesday, January 10, 2018

Power Amplifier 400W Audio Circuit 2SC2922 2SA1216

Power Amplifier 400W Audio Circuit 2SC2922 2SA1216
The power amplifier is indeed very simple, but no doubt the sound quality produced. Mid-low sound output character is very suitable for indoor or outdoor. For Outdoor try using Transformer 20A 45Vct, tr final 5 sets/channel using Sanken 2SC2922 / 2SA1216, which can produce up to 400W - 800W stereo power output. To generate maximum output power you should use high-quality components. Below the circuit diagram of mono power amplifier 400W using the Sanken Final transistor.
Power Amplifier Schematic
Power Amplifier 400W Circuit 2SC2922 2SA1216
Component List Mono



TR2=TIP31/ D381/ D382
TR3=TIP32/ B536/ B537
TR4=TIP31/ D381/ D382

Power Supply circuit you can use minimum voltage 25Volts up to 45Volts DC CT (Symmetrical), the Power amplifier is introduced and manufactured by Saturn Electronics Indonesia and you can also see some of its products there. For those of you who are interested to string up, make my own PCB Layout provide for you, PCB layout is designed by Saturn Electronics Indonesia.

PCB Layout Power Amplifier 400W + 400W Stereo 
PCB Layout Power Amplifier 400W + 400W Stereo

PCB Layout Power Amplifier 400W Mono
400W Power Amplifier PCB Layout

Assembling Super Power 400W Driver VIDEO

TESTED VIDEO Power Amplifier 400Watt by using 2SC5200 and 2SA1943 

Thursday, January 04, 2018

WoW Super Power Amplifier Yiroshi Audio - 1000 Watt

Super Power Amplifier Yiroshi Audio 1000W
This Yiroshi audio power amplifier has a low character and has high power output, so many audio lovers choose this type of amplifier because the bass boom is very pronounced. To make this Yiroshi audio amplifier so powerful need a power supply which is sufficient to let the results that can at maximum transformer minimum 20A 45-75v output and the good quality of components.

Below the circuit diagram of Yiroshi audio power amplifier driver + final transistors:
Yiroshi amplifier 1000W 1kW output power circuit diagram
Component List
R1=2k2, R2=47k, R3=100R, R4=100R, R5=56R, R6=56R, R7=56R, R8=56R, R9=47k, R10=100R, R11=2k2, R12=2k2, R13=100R, R14=47K, R15=2k2, R16=2k2, R17=100R, R18=100R, R19=100R, R20=100R, R21=220R/1W, R22=220R/1W, R23=100R, R24=1k8, R25=1k, R26=10k, R27=56R, R28=56R, R29=100R/1W, R30=100R/1W, R31=120R/1W, R32=120R/1W, R33=100R, R34=100R, R35,R36=220R/1W, R337,R38=220R/1W, R39,R40,R41,R42,R43,R44,R45,R53,R54,R56,R57,R58,R59=0R22/5W, R46,R47,R48,R49,R50,R1,R52,R60,R61,R62,R63,R64,R65,R66=10R/0.5W, R67=10R/5W + L1 10uH, R68=10R/1W

C1=1u Nonpolar, C2=330pF, C3=4n7, C4=4n7, C5=100uF/100V, C6=100uF/100V, C7=330uF/50V, C8=12pF, C9=12pF, C10=100N, C11=47pF, C12=150pF, C13=150pF, C14=100N

Q16,Q17,Q18,Q19,Q20,Q21,Q22=2SA1943 or you can change other PNP final power transistor
Q23,Q24,Q25,Q26,Q27,Q28,Q29=2SC5200 or you can change other NPN final power transistor

Final Power Transistor Audio Amplifier List
2SC5200/2SA1943 : 230volt 15 ampere 150 watt
2N3055/MJ2955 : 100 volt 15 ampere 150watt
TIP3055/TIP2955 : 100 volt 15 ampere 150watt
2N3773/2N6609 : 160volt 16 ampere 160watt
MJ15003/04 : 140volt 20 ampere 240watt
MJ15024/25 : 400volt 16 ampere 240watt

Sanken 2SA1295-2SC3264 : 200volt 17 ampere 200watt
Sanken 2sa1494-2sc3858 : 200volt 17 ampere 200watt
Sanken 2sa1216-2sc2922 : 180volt 17 ampere 200watt

Toshiba 2SA1095/2SC2565 : 160volt 15 ampere 150watt
2SC5200/2SA1943 : 230volt 15 ampere 150 watt
2N3055/MJ2955 : 100 volt 15 ampere 150watt
TIP3055/TIP2955 : 100 volt 15 ampere 150watt
2N3773/2N6609 : 160volt 16 ampere 160watt
MJ15003/04 : 140volt 20 ampere 240watt
MJ15024/25 : 400volt 16 ampere 240watt

Sanken 2SA1295-2SC3264 : 200volt 17 ampere 200watt
Sanken 2sa1494-2sc3858 : 200volt 17 ampere 200watt
Sanken 2sa1216-2sc2922 : 180volt 17 ampere 200watt
Toshiba 2SA1095 / 2SC2565 : 160volt 15 ampere 150watt
2SA1103 / 2SC2578 : 100volt 7 ampere 70 watt
2SA1105 / 2SC2577 : 120volt 9 ampere 90watt
2SA1106 / 2SC2851 : 140volt 10 ampere 100watt
2SC2580 / 2SA1105 : 120volt 9 ampere 90watt

2SC2581 / 2SA1106 : 140volt  10 ampere 100watt

PCB Layout Driver Power Amplifier Yiroshi Audio

PCB Layout Power Amplifier Yiroshi 1000W output

PCB Parallel Final Power Transistor 7 Set Toshiba 2SC5200 2SA1943
PCB Layout Power Amplifier Final transistor booster

Final Power Transistor Assembling 2SC5200 and 2SA1943
Final Power Transistor 2SC5200 2SA1943 power amplifier

Wiring Diagram Driver Power Amplifier and Final Power Transistor
Wiring Diagram Driver Power Amplifier and Final Power Transistor

For this Yiroshi power amplifier project, I make a separate PCB driver with the final transistor, you can see on both picture PCB Layout above. The power amplifier is very good and high performance. You can upgrade again to add power amplifier by adding the final transistor and also replace it with more power, current, and stronger voltage. And also must be balanced with a larger power supply current and voltage. For more details see the full interesting video below:

[Video] Assembling Super Power Amplifier Yiroshi Audio

[Video] Test Power Amplifier Yiroshi Audio with Subwoofer Speaker 12Inch

Friday, December 29, 2017

TDA7293 vs TDA7294 Audio Power Amplifier Project

TDA7293 VS TDA7294 Power Amplifier
This is an audio power amplifier project using the TDA7294 and TDA7293 ICs that I will try to work on both. Both ICs are almost the same even very similar scheme can be used in a series of stereos. And in this post, I use one PCB stereo, where on the left side IC using TDA7293 IC and right side using ICTDA7294. Previously I will share the circuit scheme of both IC Power amplifier below with the required components.

Schematic Diagram Monolithic Power Amplifier
TDA7293 TDA7294 Power Amplifier Circuit

Component List


D1=RED LED Clip Detector for TDA7293

J1=Audio Input
J2=Output Speaker 
J3=Power Supply 1:+25VDC 2:GND 3:-25VDC

Integrated Circuit
IC1= TDA7294 / TDA7293

PCB Layout Design
PCB Layout TDA7293 TDA7294 Power Amplifier
PCB Power Amplifier TDA7294

TDA7294 & TDA7293
TDA7293 vs TDA7294 Sound
You can buy both IC at UTSOURCE by visit this link: Buy TDA7294 & Buy TDA7293

TDA7293 VS TDA7294 Specification

  1. Multipower BCD technology
  2. Very high operating voltage range (±50 V)
  3. DMOS power stage
  4. High output power (100 W into 8 Ω @ THD =10%, with VS = ±40 V)
  5. Muting and stand-by functions
  6. No switch on/off noise
  7. Very low distortion
  8. Very low noise 
  9. Short-circuit protected (with no input signal applied) 
  10. Thermal shutdown
  11. Clip detector
  12. Modularity (several devices can easily be connected in parallel to drive very low impedances)


  1. Very High Operating Voltage Range (±40V)
  2. DMOS Power Stage High Output Power up to 100W Music Power
  3. Muting/Standby Functions 
  4. No Switch ON/OFF Noise
  5. No Boucherot Cells
  6. Very Low Distortion
  7. Very Low Noise
  8. Short Circuit Protection
  9. Thermal Shutdown
Some components needed to make the project amplifier TDA7293 vs. TDA7294.
DIY TDA7293 Power Amplifier

TDA7293 Power Amplifier Circuit
This is the power amplifier project that was so ready to do testing of the sound produced. Do not miss to watch the video from this power amplifier at the bottom of the post, and do not forget to subscribe my youtube video channel.
TDA7294 vs TDA7293 Power Amplifier coparison

Assembling TDA7293 & TDA7294 Power Amplifier [VIDEO]

VIDEO Test TDA7294 TDA7293 with Subwoofer Speaker 12 Inch

VIDEO TEST TDA7294 with 8 Inch 2Ohm Subwoofer Speaker 200Watt

In the video test I use 25V power supply with 10 Amperage  voltage current using Switching Mode Power Supply.

Tuesday, December 26, 2017

TDA7297 DIY Stereo Power Amplifier

TDA7297 Power Amplifier circuit

This is a series of stereo power amplifiers that use TDA7297 chip amp, this chip amp sounds less familiar maybe because of the power that is not so great. The power released by this power amplifier is about 15W x2 (stereo), this power amp circuit is often used in TV or radio amplifiers. But no one, if you also try to come make this audio power amplifier project. 

I've tried this tda7297 chip without PCB and the result is pretty good for mid sounds sounding flat and clear. By using a 12V power supply and I used to overload the speaker 3.5 "x 2 speakers with 60W power. Here is the circuit I am trying to chip amp TDA7297:
Stereo Power Amplifier using TDA7297

C1=82N - 220N
C2=82N - 220N

J1=Audio Input
J2=Speaker Output
J3=Speaker Output
J4=Supply Input 6V-18V DC Asymmetric

Chip Amp
IC1= TDA7297

For this TDA7297 chip amp you can buy it here: TDA7297 | STMicroelectronics ZIP-15 | UTSOURCE
Buy TDA7297 Chip Amplifier

I've bought there and the results you can see on my youtube channel or you can see the video at the end of this post.

PCB Layout Design:
PCB Layout Design Power Amplifier TDA7297

TDA7297 Power Amplifer PCB layout

Assembling and test TDA7297 VIDEO

Sunday, December 24, 2017

1000W Driver Power Amplifier Namec TEF

This power amplifier driver is a very powerful power driver called Namec TEF, Namec itself stands for New American Driver power amplifier is very suitable to use sanken Final 2sc2922 2sa1216 transistors, Power output can produce up to 1000W. To assemble this power amplifier is bothered easy, very simple schematics and components. but need carefulness and diligence in assembling this power. See below the circuit schematic of  Driver Power Amplifier Namec TEF:
Circuit Diagram Schematic Driver Power Amplifier Namec TEF
Part List:
RV1=1K Trimpot
RV2=1K Trimpot


D1= ZD12V/1W


J1=Audio Input
J2= To (-) Base Final Transistor
J3= To (+) Base Final Transistor
J4= VCC+ 45V - 80V DC
J5=VCC- 45V - 80V DC
GND= Ground

To make it easy assembling the driver power amplifier you can make with this PCB Layout design below:
PCB Driver Power Amplifier Namec

PCB Power Amplifier Namec TEF

This Power Amplifier is just the driver circuit you need to add booster transistor / final transistor visit this page: Booster Amplifier circuit ( Transistor Final )
You can add some transistors at least 5 sets of sanken transistors 2sc2922 and 2sa1216