Class D Amp with LM566, LM393 and 2XIRF530

[Jonsen]

Please share apex d 500 diagrams or lay out.

Sent from my SHV-E250L using Tapatalk

 

[aliabdul9797]

hi mile how btl apex D200? can share schemes ?. thanks . regards

 

[ChingTan]

apex d200 with smps




https://www.facebook.com/ching.gsmx/videos/1266375003373453/

 

[apexaudio]

apex d200 with smps




https://www.facebook.com/ching.gsmx/videos/1266375003373453/

Nice work, what is the rail voltage?
Regards

 

[thimios]

apex d200 with smps




https://www.facebook.com/ching.gsmx/videos/1266375003373453/

Nice!
Can you post what schematic and pcb has been used?

 

[ChingTan]

its working fine at +/-73v with irfb4227, but now i just notice the 47uf e cap connected in ir2110 pin 5,6 are getting hot but amp i still working is this normal?

 

[thimios]

Ok, I guess I figureD it out.

Can you post this pcb please?

 

[thimios]

My first attempt in class D.
Apex D200.
I have IXGR60N60C2D1 IGBT supose that is suitable for this.
Also i haven't 74HC00 but i have 74LS00.
Any problem Mile?

 

[apexaudio]

My first attempt in class D.
Apex D200.
I have IXGR60N60C2D1 IGBT supose that is suitable for this.
Also i haven't 74HC00 but i have 74LS00.
Any problem Mile?

Yes there will be problem, you must use IRF640N and 74HC00.
Regards

 

[thimios]

Yes there will be problem, you must use IRF640N and 74HC00.
Regards

Ok,thanks Mile i will try to find those.

 

[toreto009]

Hello everybody! Please give a working PCB and the circuit on the D200. I found a lot of schemes, and what work I do not know.

 

[thimios]

What is component in red circle?

 

[apexaudio]

What is component in red circle?

MUR120 diode

 

[thimios]

Thanks!
Just before finalize

 

[thimios]

Thanks!
Just before finalize

Hi Mile, is it possible to check the board,TL081 & 74HC00(using a scope) with empty IR2110 and power mosfets?

 

[apexaudio]

Hi Mile, is it possible to check the board,TL081 & 74HC00(using a scope) with empty IR2110 and power mosfets?

No

 

[thimios]

No

Why not?
In first try i see the 1KHz square waves in positions where the red arrows.
When power mosfets are in circuit all these are about 250 KHz.
A lot of coils was tried but all comes very hot and smell.
Finally 10 turns on a ETD29 with gap was the magic solution!
No heat ,no smell!
The last two photos ,the temperature on the LP filter coil,and fet after one hour of playing!
Power supply +/-42V

 

[thimios]

Why not?
In first try i see the 1KHz square waves in positions where the red arrows.
When power mosfets are in circuit all these are about 250 KHz.
A lot of coils was tried but all comes very hot and smell.
Finally 10 turns on a ETD29 with gap was the magic solution!
No heat ,no smell!
The last two photos ,the temperature on the LP filter coil,and fet after one hour of playing!
Power supply +/-42V

Oh sorry!
Here are the pictures.

 

[apexaudio]

Oh sorry!
Here are the pictures.

Nice work, is it test with speaker and audio signal?

 

[thimios]

Nice work, is it test with speaker and audio signal?

Yes of course.
I'm impressed from sound quality for a such simple, rediculas cheap, amplifier!