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Sunday, March 25, 2018

DIY 500W Class-D TL494 Switching Amplifier

Power Amplifier Class D using TL494 IRF N Channel mosfet
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.
TL494 Power Amplifier Class-D SMPS Audio PWM to Audio
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:
PCB Power Amplifier TL494 Class-D Amplifier PWM SMPS Audio
Download PCB.PDF: PCB Power Amplifier TL494

DIY Power Amplifier class-d high power amplifier
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.

Electronic Circuit is a good site for hobbyist also who would like to try DIY because it shared good circuits. If you have a personalized circuit requirement you may feel free to request it through the comment box or contact me.

28 Comments

me too sir. cause its powerfull and hugh efficience and cold final tr

helo friend
can this be able to drive two 12" 420w RMS sony xplod bass ans two 12" 100w RMS cone speaker.

This look amazing, what is the THD for this amp?

Do not be deceive it does not work and is a scam. Please do class AB amplifier and live the scam yoy.wart your fund. Try Nelson pass circuit it has class A and class Ab they all work fine and the sound quality is of it best and you will be amazed.

If you prefer class d amplifier don't try this because is wast of funds.😂😂😂😂😂😲😲😱😱😱

This is my email address I know he will insults me for saying it does not work. Some has unstable oscillator and giving it high watts. My Nelson pass class AB mosfets sound better and quality than all the above class D circuit.😂😆😆😆😆😆 gavivinagadogbe@Gmail.com

I do used Nelson pass misfits circuit in my active line array and far better than his 😂😂😂😂😂😂😂.
Gavivinagadogbe@gmail.com.

hi what is the minimum impedance that this amplifier supports?

it less power to drive 12inch subwoofer in two

This comment has been removed by a blog administrator.

jika anda yang punya desain silahkan hubungi kontak us.

amigo aqui do brazil voce pode me tira,uma duvida pq no transistor em um dos fet nao chega o sinal pwm base de Q1 NAO TEM SINAL nao sai audio

hi greetings excellent your amplifier ... how to build the coil L1 ??? ..... if I wanted to increase power, alone would have to increase voltage and change mosfet ???

buenas noches, hay una diferencia entre el PCB y el diagrama. en el PCB la pista que sale del colector de Q2 (MJE340) está unida a la pista de su base, y en el diagrama está separada. En el circuito del video está como debe ser, o sea, corregido. yo monté el circuito pero no me funciona, aparece una señal muy débil, probablemente haya alguna otra diferencia, o conecté algo mal. si alguien me puede ayudar, estoy agradecido. muchas gracias

aprecien bien el vídeo muestra dos circuito diferente el primero aparecen como dice plano mj340 y mj350 y cuando van a probar circuito ya aparece un transistor mas grande donde vas un mj340 para mi es fraude eso es como ofender a tu seguidores

bueno días amigo si funcionas pero mal yo con modificaciones le estoy sacando 50 vatio pero me suena ronco y se calienta los mofe si me quiere ayudar aqui esta mi correo tecnipertuz@hotmail.com gracia amigo

tenho nucleo de 35mm AWG17!!! quantos giros???

ola amigo se voce presta atençao a um curto na pcb entre base e coletor de mj340 o Q2 E SO CORTA COM O ESTILETE POIS NO VIDEO ELE CORTOU O CURTO

separa na pcb com um bisturi , no video que ele fez no tem curto

tienes um curto em Q2 entre B e c , corta com um bisturi

funciona!!! mas tengo de por um preamplificador

Dear Wahyu Eko Romadhon,
Can I use air coil inductor for L1 ? So, would you mind to tell me about diameter wire ?
Best regards,
tri.

good ono does not solve anything friend


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