500W PA amplifier with Limiter

[TeHaa]

may be useful .. pcb B500 scp (signal, clip, power indicator) already tested ok ... thank Apex Audio ..

Nice work

 

[thimios]

Sorry Arif, but traces are grey so no
home etching is possible .
Did you have this traces in black ?
Thimios.

 

[wendipassundan]

black bottom

Sorry Arif, but traces are grey so no
home etching is possible .
Did you have this traces in black ?
Thimios.

sorry sir... like this...???



arif smd

 

[thimios]

sorry sir... like this...???



arif smd

Thats it!
Thanks .

 

[apexaudio]

B600

 

[gantex]

B600

pink colour .. so sweet.. i like it.. very nice pcb.

 

[eper puliran]

sir how can we get nsl32 since theres no availability in our area,, wat is the function of this in the circuit,, if no availability is there any replacement for this nsl32..???

 

[ekoinsky]

sir how can we get nsl32 since theres no availability in our area,, wat is the function of this in the circuit,, if no availability is there any replacement for this nsl32..???

if you not use nsl32 is no problem. the fuction just limitter, this amp can work fine without nsl32.
you can use ldr + led instead nsl32, please read post before..
regards.

 

[gantex]

sir how can we get nsl32 since theres no availability in our area,, wat is the function of this in the circuit,, if no availability is there any replacement for this nsl32..???

maybe this usefull for u. Audio Amp Power Limiter

 

[black]

I think Mr. apex made ​​amplifier girlfriend or wife is a pink out

 

[Tape Echo]

sir how can we get nsl32 since theres no availability in our area,, wat is the function of this in the circuit,, if no availability is there any replacement for this nsl32..???

If they'll ship internationally, NSL32 are available at:

NSL 32. - ADVANCED PHOTONIX - OPTOCOUPLER, 2KV, RESISTIVE O | Farnell UK

Results for Opto Devices, Thermistors

Silonex - NSL-32 - Optoelectronics & Lighting - Optocouplers/Optoisolators - Allied Electronics

 

[gantex]

I think Mr. apex made ​​amplifier girlfriend or wife is a pink out

or for birthday..

 

[eper puliran]

sir i have a transformer 65-0-65 ac is this ok for this b500 amplifier circuit..??

 

[gantex]

sir i have a transformer 65-0-65 ac is this ok for this b500 amplifier circuit..??

please go this page : http://www.diyaudio.com/forums/solid-state/164208-500w-pa-amplifier-limiter-4.html#post2147823

 

[John Cory]

Hi Apex.
Can you direct me to your page which features the H900. Will it work on 100 - 100Vdc Supplies(68-0-68Vac)?
Regards.John

 

[eper puliran]

sir wat is the replacement for mje340 and mje350 since no available her in our place...

 

[gantex]

sir wat is the replacement for mje340 and mje350 since no available her in our place...

try go to this page http://www.diyaudio.com/forums/solid-state/164208-500w-pa-amplifier-limiter-3.html

 

[gantex]

Hi Apex.
Can you direct me to your page which features the H900. Will it work on 100 - 100Vdc Supplies(68-0-68Vac)?
Regards.John

what u mean, 100vdc for mv or hv?

this original posted from apex.

Power suply 0,+/-60V,+/-120V. THD 0,03% 20-20000Hz on 900W 4 ohms. All new brand amplifier use 4 pairs of 1943/5200 evan for 1900W 2 ohms in their specification. I dont want to go tnat much.

 

[John Cory]

Hi there.
My AC supply is 68 - 0 - 68 volts AC.
After rectification and smoothing it comes out to +97 - 0 - -97VDC hence my request for a design that can handle + 0 - 100Vdc (to allow for mains fluctuations ).
Regards.
John

 

[gantex]

Hi there.
My AC supply is 68 - 0 - 68 volts AC.
After rectification and smoothing it comes out to +97 - 0 - -97VDC hence my request for a design that can handle + 0 - 100Vdc (to allow for mains fluctuations ).
Regards.
John

maybe u can goest to 100vdc but add more output or use mjl .

try to search from here http://www.diyaudio.com/forums/solid-state/162408-900w-h-class-pa-amp-limiter-192.html