500W PA amplifier with Limiter

[Dacuycoy]

33k + 10k will be ok

 

[luisitoloco22]

someone assemble this circuit?

 

[irvynejay]

someone assemble this circuit?

Look post #842 and 847

Many DIYiers make this circuit at it work and sounded very cool

 

[engel dela pena]

thanks sir andrew,
yes it is available on line order,but not localy or readily available in the market here is just like that,only one store sell at 1%(43k 1/4w)
thanks,
regards

 

[gooseneck]

Hi Apex, greetings!
can u post Push Pull transistorized power amp schematic that could drive at least 200 watts in 16 ohms load...

 

[apexaudio]

Hi Apex, greetings!
can u post Push Pull transistorized power amp schematic that could drive at least 200 watts in 16 ohms load...

Use B500 with +/-85V DC rail voltage.
Regards

 

[luisitoloco22]

B500 based on schematics of H900, but in AB class.
Power supply +/-90Vmax.

You can also use transistors mjl 21194; and mjl 21193 instead of transistors 2sa 1943 and 2sc 5200

 

[irvynejay]

trapo 40x4

To mile Can you help me about this trapo scene IR2117 will be delayed,i decide to try to use your step drive using TL072 on B500 but im having difficulties analyzing the trapo which is i will customized to make pls give advice which is correct for my windings

 

[coolet]

@irvynejay the upper drawing is the correct layout

 

[irvynejay]

hmm ok so in need to rewind the trapo like this 80vac 40vac 0 40vac 80vac pls correct me im wrong
Thanx Coolet

 

[mathez]

hii mile,
when I powering up my 2nd B500 why fuse on V+ damaged,then R27(22R) turn to brown slightly burn and MJE350 is very hot,
what would be possible trouble?

 

[engel dela pena]

mathez,
22r get burned when you forgot jumper wire

 

[aman khalsa]

this is my b500

every thing is good.sound is very great bt 4k7 2w is getng very hot ..

 

[A square]

nice work bro... use 4k7 5w

 

[loganati]

b500

my b500 in progress

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

http://img811.imageshack.us/img811/1189/picture144e.jpg

 

[apexaudio]

hii mile,
when I powering up my 2nd B500 why fuse on V+ damaged,then R27(22R) turn to brown slightly burn and MJE350 is very hot,
what would be possible trouble?

Can you post pictures? Do you connect input GND to PSU GND?

 

[apexaudio]

every thing is good.sound is very great bt 4k7 2w is getng very hot ..

Heating 4K7/2W is OK, what rail voltage you use?
Regards

 

[apexaudio]

my b500 in progress

Nice heatsink, I suggest to use some drivers in TO220 case.
Regards

 

[irvynejay]

To Apex hello
Any advice on post #868 and #870 just for clarification..

 

[apexaudio]

To Apex hello
Any advice on post #868 and #870 just for clarification..

80vac 40vac 0 40vac 80vac is correct,
Regards