900W H-class PA Amp with Limiter

[rizqi]

Good job...

 

[wikastana]

I Redraw Sammer PCB H900 TEF, please re check wiring this drawing

 

[wikastana]

H 900 TEF

H 900 TEF

 

[stevensoosai2527]

Wikastana, pls post the circuit diagram for the design. Nice art work. Steven, malaysia.

 

[rizqi]

Were the component part for corections layout??

 

[wikastana]

h900 TEF

Component H900 TEF

 

[iiee3602]

Nice layout. Show us pictures if you completed and tested.

 

[electra_ina]

Component H900 TEF

It's..PCB H900TEF design by Soerjanto.......

 

[wattaniya]

some components not align properly in h900 tef by wikastana.

 

[rizqi]

some component any wrongs in SAMMER TEF vertions ...

 

[ChingTan]

i like this powerful amp thanks.. mile..

 

[rizqi]

Hello Rizqi,

Thanks.. This design have not been tested yet i'm still trying to find some error before i etch, but you can also review and let me know if you found any mistake so i can correct the error.

Send me your email add so i can forward you the sprint layout file.

Regards

Your layout is correct but adjust as the distance between the10uF160v 10uf63v...still less loose... nice😉

 

[44250]

i like this powerful amp thanks.. mile..

It looks very very nice! How much power have you acchived and how good do those heatsinks cool it down? I am asking because i am trying to build one 500W amp so i need some guidance,clue how big the heatsink should be for that power.

 

[ChingTan]

this heat sink i use is a bit small that's why i use two fan to cool it down.

 

[apexaudio]

i like this powerful amp thanks.. mile..

Nice work,
Regards

 

[rizqi]

Hi mr. Mile .... I have built 2 units of Apex H900
and now I am building a 3rd H900 apex with two transformer-30 Amphere 55vac-47vac-0-47vac-55vac. and 4x10000uf 75V (Sprague).
My question is: can use 95vac-47vac-0-47vac-95vac?
output transistor using original MJLJL3281A (NPN) MJL1302A (PNP) ...
thanks and regards.

 

[nugroho]

still in progress:

 

[rizqi]

H900

3rd H900 - my Project 😉
30A transformator 80vac- 40vac-0-40vac-80vac
output transistor using original MJL3281A (NPN) MJL1302A (PNP)

 

[apexaudio]

3rd H900 - my Project 😉
30A transformator 80vac- 40vac-0-40vac-80vac
output transistor using original MJL3281A (NPN) MJL1302A (PNP)

Nice work, I sugest to rotate modules 180deg (heatsinks near transformers.
Regards

 

[44250]

Nice work, I sugest to rotate modules 180deg (heatsinks near transformers.
Regards

That is good suggestion-even the tunnel would be better formed so more air would go through heatsink(s)!

It looks great are those 10 000uF or 100 000uF capacitors?