DIY 500W Class-D TL494 Switching Amplifier

DIY 500W Class-D TL494 Switching Amplifier

Publisher Elcircuit

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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

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