DIY Mini 12Volt Power Amplifier

On this occasion, I will share a mini power amplifier with a power output that is not big enough, and this power amplifier can be supplied with 12volt voltage up to 24V asymmetric. With a small power, this amplifier can be applied for home use or on a radio or portable speakers. For circuit schematics and PCB layout my own design as shown below.

Component list:
R1=560K, R2=22R, R3=6K8, R4=6K8, R5=2K2, R6=1K, R7=22K, R8=1R, R9=1R, R10=15R, R11=150R RV1=10K-100K Potentiometer
C1=10uF, C2= 10uF, C3=330pF, C4=220uF, C5=100uF, C6=330uF
Q1=C945/ C828, Q2=BD139, Q3=TIP32, Q4=TIP31
D1=1N4007/ 1N4148

PCB Layout Design:

You can download PCB file .PDF at end of this post.

 Finished Project:

Full video making of this 12Volt Power Amplifier circuit by using PC power supply former, the input voltage about 14V DC asymmetric with current output 5A-20A. For the final transistor is using D1763 and B1186 you can also using TIP31/TIP32. The speaker using a 2x2,5inch speaker with maximum power 60W, see below the video:

DOWNLOAD

12Volt Power Amplifier PCB layout .PDF

DIY KIT Voice Spectrum Lights 8x8 LED Red/Green/Blue

Hello elcircuit friends, this time I will post make audio spectrum circuit using LED 8x8 Red / Blue / Green. This circuit you can directly assemble because on icstation.com site is available. Which makes it easy for DIY'ers to create a KIT Audio Spectrum complete with acrylic case. The schematic circuit also you can see below.

For more details, you can see the video below is complete with KIT, also by testing this circuit of voice spectrum lights

To assemble this kit the things that need to be considered so that these kits can function properly is:

• Plug the resistors, capacitors in accordance with the existing label on the PCB.
• Install 47ohm on the label RY1 - RY8, RX1 - RX8
• Install correctly MIC, The negative electrode of the MIC is connected to the metal case The positive pole is not connected
• Plug it correctly foot transistor S9014, do not upside down base legs, emitter and collector.
• Pay attention to the direction of the integrated circuit
• Plug the led properly the long pin is the positive When installing, please keep each transverse or each vertical one in the same color.

To buy this Audio Spectrum 8x8 Red/Green/Blue DIY Kit Level Indicator w/ Acrylic Shell Voice Spectrum Lights visit here: ICSTATION

150W + 150W TDA8950TH Class-D Chip Amplifier

Power amplifier class d is now quite crowded among the lovers of audio amplifiers because this power amplifier has a large enough power output and has a fairly slim design. Therefore, it does not provide such a large place for the size of a high power amplifier. And no less important, the amplifier has a heat that is not large compared to class AB or OCL power amplifier. And this time I will share the class-D power amplifier circuit using a chip (IC) as the main power amplifier of this D-class. Namely using TDA8950TH IC, this IC the design is very small with 16mmx14mm dimension. And for output power that can be issued this IC can reach up to 340W x 1 @ 8 Ohm; 150W x 2 @ 4 Ohm. The voltage input is wide range about 12V up to 45V DC. Below is the schematic circuit of TDA8950TH.

Chip amp class-d TDA8950TH you can buy at WINSOURCE ELECTRONICS:

Click Link Below to Buy this TDA8950TH Class-D Chip Amp

BUY TDA8950TH

 TDA8950TH CHIP AMP CLASS-D from WINSOURCE ELECTRONICS

DIY PCB Class-D Power Amplifier with TDA8950TH Chip Amp:

 PCB Transfering

PCB Etching with Fericlhoride

 2 PCB Layout for 2 Layers PCB Top and Bottom

Finished Power Amplifier Class-D Chip Amp TDA8950TH

PCB layout with PDF File format you can download below:
PCB Layout TDA8950TH Top Bottom .PDF

10A 70V SMPS for Power Amplifier

Before the making of Gacun SMPS circuit for a power amplifier, we must know in advance what it is Gacun. If you are an electronics hobbyist who often dabbled with Power Supply TV, then you will not be familiar with Gacun module.

Kit / Module Power Supply Gacun is a very innovative breakthrough. Can be applied to any regulator including TV, as long as the transformer is still good. With this kit, the technicians are very helpful to replace the original regulator circuit.

In this article, we do not discuss more deeply about how to apply/install Gacun for TV regulator, but we will make power supply amplifier by using Gacun module which I will share what kind of Gacun circuit module itself. Which I have previously published on how to create an SMPS circuit with a poison module in this article: Switching Mode Power Supply 10A 20-50V DC CT

The following is an SMPS circuit 10A using Gacun more detail:

Component List:
R4= 22R
R5= 1K5
R6= 39K
R7= 3K9
R8= 1K
R9= 820R
R10= 220K
R11= 0,1R - 0,22R 5W
R12= 5K6
R13= 220K 2W
C1= 100N 275V
C2= 220uF 400V
C3, C4, C8= 10N
C5, C6= 1uF 50V
C7= 2N2
C9= 22N
C10= 10uF 50V
C11= 47uF 50V
C12= 1N 400V
C13, C14, C15, C16= 1000uF 100V
D5, D6= 1N4148
D7= Zener 12V 500mW
D8, D9= MUR8060
BR1= Diode Bridge KBU4M
TR1= EMI Filter from TV PSU Circuit
TR2= Gacun Trafo MK201609
TR3= Primary Winding: 45Turns 0,6mm , Secondary Winding: 14Turns CT 14Turns 0,8mm. Core transformer using from former tv power supply.
IC1= UC3843
Q1= IRFP460, K3911

Examples of the finished Gacun SMPS circuit:

DIY Stereo Yiroshi Power Amplifier 1400W

This my second project for Yiroshi Power Amplifier Circuit, power amplifier circuit is indeed very super quality, many have tested the strength of this Yiroshi power amplifier. Power amplifier yiroshi is suitable for outdoor or indoor. Previously I have made this yiroshi amp circuit in the mono version. I have also tested it in the unboxed state of the box, using only 2SC2922 and 2SA1943 final transistors, this amplifier is capable of high enough power until my speakers are damaged and also my smps is damaged This power amplifier is tough enough, none of my final transistors parallels broken.

here is the circuit scheme of the stereo power amplifier yiroshi, the scheme below is still the same with the yiroshi circuit that superpower driver before, only later will replace the transistor previously used TIP3055 and TIP2955 I replace it with transistor 2SC5200 and 2SA1943. Because the previous transistor has only a maximum voltage of 60Volt with a maximum current of 15Ampere, so it is advisable to use a larger transistor maximum voltage and current. If for 2SC5200 and 2SA1943 transistors this is enough for me, maximum CE CE voltage up to 230V and maximum current up to 15 Ampere.

In the above circuit scheme is a combined stereo of two series of yiroshi power amplifiers, so to list the components to make it easier for you to buy, please just look at the previous post here Yiroshi Power Amplifier Circuit.

To make it easier for this yiroshi amplifier circuit you can use this PCB Layout design:

PCB Final Transistor Parallel for stereo amplifier yiroshi driver.

DIY PCB AND ASSEMBLING COMPONENTS STEREO YIROSHI AMPLIFIER (VIDEO)

I have made this stereo yiroshi power amplifier circuit, but this is still in the test process stage. and it turns out for PCB Layout for the driver you have to reverse the position of all transistors, so the same face with the top component layout. Later you will be able to see the location and position of the transistor, after the power amplifier is finished and ready to be produced.

For the final transistor, on this yiroshi stereo amplifier project, I do not use transistor Toshiba 2sc5200 and 2sa1943 as well as sanken transistor 2sc2922 and 2sa1216.

I am using transistor NJW0302 and NJW0281, the transistor price of NJW0302 and NJW0281 is almost same as Toshiba transistor 2sc5200 and 2sa1943.

Both transistors both have 150Watt power output, and IC 15Ampere but for VCEO and VCBO are different, a 20Volt difference is higher transistor NJW0302 and NJW0281, where the maximum voltage is 250Volt.

The following is a final transistor picture of NJW0302 which is embedded in the PCB:

And this is the final transistor image I've paralleled using the PCB Design layout above.I am using 14 pairs of NJW0302 and NJW0281 transistors and for per channel yiroshi driver I use 7 pairs of transistors.

Already tested power amplifier yiroshi I will supply with 20Ampere 60Volt Switching Mode Power Supply 

ASSEMBLING FINAL TRANSISTOR AND TEST POWER AMPLIFIER YIROSHI STEREO OUTPUT USING 14SET NJW0302 NJW2801.

Download File PCB Layout.PDF
PCB Stereo Yiroshi Amplifier
Transistor Final Top
Transistor Final Bottom

DIY 500W Class-D TL494 Switching Amplifier

In this project, I will share about class-d power amplifier using TL494 IC for PWM, and use N-Channel MOSFET transistor as the final amplifier. This circuit is not so complicated and cheap to make practice making power amplifier class-d. This power amplifier circuit can be supplied with 30V to 100V DC asymmetric power supply using 8VDC bias voltage up to 12VDC. For the output power of this amplifier can generate power up to 500Watt, pretty good is not it? to make this power amplifier please see the circuit schematic of TL494 Power Amplifier below along with PCB Layout design that you can download in the form of .PDF format.

Part List:

R1=1K

R2,R5=47K

R3=10K

R4=470R

R6=8K2

R7=56R

R8=2R2

R9=470R

R10=56R

C1=1uF/16V

C2, C3=1N

C4, C6=10uF/50V

C5=2N2

C7, C9, C10=220uF-1000uF/100V

C8= 100N/400V

C11, C12= 1uF - 4u7F / 400V

Q1= MJE350

Q2, Q3=MJE340

Q4, Q5= IRF540, IRF460, IRF250, IRF 4227 N-Channel Mosfet

U1= TL494, TL494CN

L1= 22uH - 35uH

J1= Audio input

J2= Bias Voltage 8-12V

J3= +V 30- 100V DC

J4= Speaker Output

Below the PCB Layout Design for Power Amplifier Class-D TL494, You can download and print the PDF file:

Download PCB.PDF: PCB Power Amplifier TL494

In the picture above is when PCB I etching using Ferichloride and shake it into the container. For more details, I will update the video complete making this class-d power amplifier using TL494.

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:

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

PCB Size: 120mm x 80mm

Making PCB Power Amplifier Rocky TEF [VIDEO]

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.

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:

BUY IC NE5532 ALLCHIPS

To facilitate the making of this filter subwoofer circuit I also share PCB Layout design below, with the size of PCB 107mm x 69mm.

DIY Subwoofer Filter Circuit

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

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.

Components
Resistor
82R x 1, 1K  x 1, 8K2 x 2, 10K x 1, 47K x 2, 68K x 1, 180K x 1
Capacitor
100uF/35V x 4
Diode
1N4148 x 2, 1N4001 x 7, LED x 3
Relay
Relay 8 Pin DPDT
Transistor & IC
7812 x 1, 2N5551 x 3
PCB Layout Design:

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

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:

View larger schematic image here: Power Amplifier Class-D D4K5

Component List

Resistor

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

R12=100R

R14, R15=4R7

R22, R23, R24, R25, R31, R33=47R

R28, R29, R30=0,1R/2W

R36, R38=22R/2W

R40=1K5/5W

R41=10R/2W

RV1=10K Trimpot

Capacitor

C1=10uF/16V

C2=10N

C3, C4=1N

C5=470uF/16V

C6=220uF/16V

C7, C9, C11, C12, C13, C15, C16, C18, C19=100N MKP

C8=470uF/16V

C10, C14, C17=100uF/16V

C20=10uF/50V

C21, C22, C23=220N/475V

C24, C25, C26=470uF/180V

C27, C31, C33=100N/275V

C28, C29, C30=470uF/180V

C32=470N/250V

Diode

D1, D2, D5, D10, D11= 1N4148

D3, D4= ZD5V6

D6, D18, D19= MUR460

D7= LED (RED) OCP

D8= ZD5V6

D9= LED (BLUE)

D12,D13,D14,D15,D16,D17= 1N5819

Transistor

Q1= 2N5401

Q4, Q6= BD139

Q5, Q7= BD140

Q8, Q9, Q10, Q11, Q12, Q13= IRFP260

IC

U1= TL071

Q2= CD4049

Q3= IR2110

U2= NE555

U3= LM311

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

View larger PCB Layout Design: PCB Class-D D4K5
DOWNLOAD PCB .PDF: PCB Layout Design Class D D4K5

How to make Class D Power Amplifier [VIDEO]

High Power Amplifier Test Class D 

Below step by step how to make yourself PCB board for this power amplifier [VIDEO]

DOWNLOAD : PCB POWER AMPLIFIER D4K5.PDF