900W H-class PA Amp with Limiter

[wattaniya]

Pcb layout on this same page post #2213

no i didn't try that circuit.
apex sir not share that bottom layout.
how did u get the bottom layout?
can u share the bottom layout.

 

[vedmitraa]

Here you go

 

[gista22]

this forum is verry good....

 

[danzrose]

Here you go

Sir, it's not the Pcb layout post #2213 , no Opamp in post #2213

 

[wattaniya]

thanks vedmitraa,
but there is no opamp on post no 2213 .

 

[Riff]

Sir vedmitraa were is a fault in component value of negative side ofswitcing circuit. Or were you have corrected, hope you understand my bad english.
regards.

 

[Riff]

nazirdigi
that right there is no opamp on post no 2213, but in stepper side is same like on post no 2213.

 

[Riff]

Hello Nazirdigi did you try this circuit.There is a fault in component value of negative side ofswitcing circuit. I have corrected it and is working fine since 6 months.

H900 VAS+SD

 

[wattaniya]

thanks riff,
is this working pcb?

 

[wiljj78]

Good day Mr. Miles,

FYI, I made your AX14 and B500 and i love all the result of these wonderfull projects, and moving on to class H amp. I wonder if H900 Ver.2 can handle 110-55-0-55-110Vac using MJL4281A/MJL4302A Power Output? If so what are the component value need to change???

Your expertise is highly appreciated.

Regards,
Wiljj78

 

[apexaudio]

Good day Mr. Miles,

FYI, I made your AX14 and B500 and i love all the result of these wonderfull projects, and moving on to class H amp. I wonder if H900 Ver.2 can handle 110-55-0-55-110Vac using MJL4281A/MJL4302A Power Output? If so what are the component value need to change???

Your expertise is highly appreciated.

Regards,
Wiljj78

Use 110-55-0-55-110V DC without changes. H900 can't handle with 110-55-0-55-110V AC (156-78-0-78-156V DC).
Regards

 

[wiljj78]

Use 110-55-0-55-110V DC without changes. H900 can't handle with 110-55-0-55-110V AC (156-78-0-78-156V DC).
Regards

What about 83-55-0-55-83Vac (6X28Vac) in series???

Regards,

 

[apexaudio]

What about 83-55-0-55-83Vac (6X28Vac) in series???

Regards,

83-55-0-55-83vac can be use, but with 80V caps in PSU.
Regards

 

[sandeep kayarkar]

traffo for H900 Brigde

sir mile.
i have duild H900 and u saw that on FB. now i am thinking about H900 Bridge. i just wanted to know about transformer .
maximum VAC. maximum KW. And the filter cap?

83-55-0-55-83vac can be use, but with 80V caps in PSU.
Regards

 

[wiljj78]

83-55-0-55-83vac can be use, but with 80V caps in PSU.
Regards

Mr. Miles you're the Star 😉, I will use 100V caps for PSU and R24 & R25 4.7K/3W for more safety.

Many thanks.....

Regards,
Wiljj78

 

[sandeep kayarkar]

tranformer for Bridge

sir mile. how are you?
My second H900 almost done, just waitinf for your reply about transformer for H900 bridge?

 

[apexaudio]

sir mile. how are you?
My second H900 almost done, just waitinf for your reply about transformer for H900 bridge?

Nice work, use 2kW transformer 4x30vac for two H900 in bridge.

 

[sandeep kayarkar]

Thank you sir mile,

 

[rahkik]

can any one tell me how to upload immage..........

 

[wattaniya]

hi apex sir,
can u share the shcematic for h900 triple darlington, with 8 pairs output, without bias adjustment, like normal h900.