1000W Simple PA Amplifier

[rizqi]

GOOD JOB SIR..

 

[rizqi]

BAKAR BA SERIES

here is pdf

 

[black]

in 38 pages still do not know if it works have not been bine.etc if I hear that still remain in the scheme Kon Electronic :: View topic - amp leco

 

[wiljj78]

Try to fit it in 260x112mm, it's same dimension as amp pcb for 3U.
Regards

Ok, here are the 2 Versions for optional diode.
Regards,

 

[rizqi]

hy @wiljj78.. pls upload sprint vertions... thanks n regards

 

[K-amps]

Anyone want transformers

I have a few of these I need to offload soon. Ping me if interested.

Input 100v/110v/220v

Output: 62- 0 -62 or 69-0-69vac or +/-84vdc or +/- 99vdc

700va

Metal encapsulated

Can parallel 2 to get 1.4kVA

These are very tight tolerances. There is less than 0.1mVac difference in secondary voltage of 2 transformers.

They are pull outs form Adcom GFA-555ii's

Price negotiabe: PM me.

 

[apexaudio]

Ok, here are the 2 Versions for optional diode.
Regards,

Nice work, caps will have better cooling on this pcb, thanks again.
Regards

 

[wiljj78]

Nice work, caps will have better cooling on this pcb, thanks again.
Regards

Most welcome...

 

[apexaudio]

Setting bias is easy, just adjust about 15 mV on 1R/5W resistors and that is 15mA per output pair or 135mA total.

 

[tinitus]

with vent 'holes'

and now able to lift it out, as a whole unit

 

[apexaudio]

with vent 'holes'

and now able to lift it out, as a unit

Looks like custom built chopper

 

[tinitus]

I take that as a compliment, thanks
not really a fan of choppers myself.... but that is a cool looking bike

 

[wiljj78]

Soft Start w/ Fan Control.

 

[apexaudio]

Soft Start w/ Fan Control.

Thanks that is very good idea to integrate this circuits on same pcb.
I suggest to use protect with NE555 for BA1200.
Regards

 

[wiljj78]

Thanks that is very good idea to integrate this circuits on same pcb.
I suggest to use protect with NE555 for BA1200.
Regards

I'm currently using this protect in my amps but I don't remember if i posted this protect before.
...This is tested and working circuit, just needs to change T9 relay and should be fine for BA1200.
Regards,

 

[SERGIODS]

Thanks

Here's Rev1.2 using 10K/5W resistor.

Regards,

Thanks for taking the time to improve your pcb and porating 5w resistors.

 

[SERGIODS]

¿?

Here's the correct one...

What was the fix? I did not realize.

 

[SERGIODS]

great forum

Soft Start w/ Fan Control.

I'm currently using this protect in my amps but I don't remember if i posted this protect before.
...This is tested and working circuit, just needs to change T9 relay and should be fine for BA1200.
Regards,

PCBs very practical and useful, thanks mate, you are a great person, I am pleased to be in this forum with good and friendly people.

 

[apexaudio]

I'm currently using this protect in my amps but I don't remember if i posted this protect before.
...This is tested and working circuit, just needs to change T9 relay and should be fine for BA1200.
Regards,

You need add output coil and 5W resistor, NTC connection must be change look circuit in post #394.
Regards

 

[wiljj78]

You need add output coil and 5W resistor, NTC connection must be change look circuit in post #394.
Regards

Got it... will revise that and make single protect.
Regards,