1000W Simple PA Amplifier

[nugroho]

looking good tinitus

congratulation

 

[tinitus]

thanks

ok so far, but it is getting a bit tricky

 

[AndrewT]

Tin,
the rectifiers must be next to the cap terminals to minimise the loop areas of the charging circuits.
The rectifiers should be next to the transformer output leads to minimise the loop areas of the charging circuits.
Design your PSU to meet minimum loop area criteria.

 

[tinitus]

The rectifiers should be next to the transformer output leads to minimise the loop areas of the charging circuits.

bridges and first caps can't get much closer than this

 

[AndrewT]

That looks good.
Post422 misled me.

 

[tinitus]

small heatsink for TO devices mounted on top of power supply board
and for supporting board with input and other related components

 

[tinitus]

and a few more 'funny pics'

 

[apexaudio]

and a few more 'funny pics'

Progress with glacier speed

 

[jrsonic]

sir,what is the component name for NLS32? found in the ba1200 input display?

 

[wiljj78]

sir,what is the component name for NLS32? found in the ba1200 input display?

Maybe this can help.

 

[tinitus]

drilling and tapping this many holes in a big heatsink will always be scary, and Im glad it done now
and everything fits nicely, right in the middle

there will be an alu bar accross all transistors, with their legs facing up
and the driver is mounted right above them, with legs facing down

 

[mcd99]

Tinitus,

I'm enjoying watching your progress on this. Nice work.

1000W amp, you've got a very appropriate name

 

[jrsonic]

ok, thank you very much, one more question, i need a replacement for the ff; MJL4302A,MJL4281A, BC337,BD681 since this transistor is not available in my place,very hard to find! thanks in advance.

 

[AndrewT]

.........my place.......

Where?

 

[wiljj78]

Here's the file for BA1200 Protect using NE555 IC....
Regards

 

[wiljj78]

And the PSU....

 

[boss2009]

And the PSU....

Nice work Sir Wiljj78... Thanks for sharing...
If I may ask... is it ok also to have separate fuses in each channel in that same PCB?
Many thanks & Regards

 

[sandeep kayarkar]

Here's the file for BA1200 Protect using NE555 IC....
Regards

Sir mile and wiljj78

can i use this protect for H900?

 

[apexaudio]

Sir mile and wiljj78

can i use this protect for H900?

This protect can be use with any amp.

 

[sandeep kayarkar]

This protect can be use with any amp.

Thanks for the quick reply sir mile,