500W PA amplifier with Limiter

[vorezky04]

Who want like this heatsing power BUILT UP with long 40cm and height 12cm...
Just $ 16.5./piece
Position in INDONESIA...

 

[piotreq]

What is the safe voltage for B500 with 3 pairs of transistors?
It will be used only for 8ohms load.
I need about 250-300W.

 

[rudi str]

Did you mean: adakah layout versi b500 TEF




is there a version of the B500 TEF lay out

 

[PetruV]

After all im going to build this amp,this is a little more complex but i think its ok,\
I need pcb pdf so when i print it its the correct size

 

[apexaudio]

This CCS circuit add to B500 instead resistors feed zeners with 30mA with any rail voltage.

 

[PetruV]

This CCS circuit add to B500 instead resistors feed zeners with 30mA with any rail voltage.

So the power to 5532 is more stable and it will sound better,also we will be able to get more power by increasing the voltage past the 90v mark and adding more outputs

 

[apexaudio]

So the power to 5532 is more stable and it will sound better,also we will be able to get more power by increasing the voltage past the 90v mark and adding more outputs

Power to NE5532 (+/-15V) will be stable from +/-30V to +/-90V rail voltage without any changes.

 

[PetruV]

Aniways i need a .pdf pcb and layout

 

[PetruV]

And what voltage and current transformer will i need for 1 chanell(im going to use one trafo per chanell)
Im going to rewind microwave transformers since theire cheap

 

[ahmadfay]

hi Apex, I have made TEF B500 and have been successful, but there are a few questions:
1. predriver transistor (MJE 350/340) and driver (5200/1943) is rather hot, is this normal?
2. how much minimum voltage for B500 TEF?
Thank you,

 

[PetruV]

hi Apex, I have made TEF B500 and have been successful, but there are a few questions:
1. predriver transistor (MJE 350/340) and driver (5200/1943) is rather hot, is this normal?
2. how much minimum voltage for B500 TEF?
Thank you,

Put a heatsink on them,on both since 52001943 snd the 340 350 anre hard at work since they have to drive a lot

 

[apexaudio]

hi Apex, I have made TEF B500 and have been successful, but there are a few questions:
1. predriver transistor (MJE 350/340) and driver (5200/1943) is rather hot, is this normal?
2. how much minimum voltage for B500 TEF?
Thank you,

This is normal and you must use heatsinks for drivers and predrivers.
Regards

 

[PetruV]

I printed it and it came out perfect in size and everithing lines up bu how do i transfer it to the pcb since i only have and inkjet printer

 

[PetruV]

What is the right transformer for 1 channel Everithing else i sorted even the printing

 

[ahmadfay]

This is normal and you must use heatsinks for drivers and predrivers.
Regards

thanks for the response.
how about minimum voltage for the B500 TEF?
regard,

 

[ahmadfay]

I printed it and it came out perfect in size and everithing lines up bu how do i transfer it to the pcb since i only have and inkjet printer

You can use the machine / copy services, it's the same with laser jet printers,
regard,

 

[PetruV]

You can use the machine / copy services, it's the same with laser jet printers,
regard,

oook that exactly what ill do when i get ink for my printer

 

[PetruV]

Yes but 2x 55v 7-10a transformer is ok for one chanel

 

[PetruV]

i found on the romanian sits an amplifier called ipa800 which is very famous and i heard its very simple but i didint find pcb and layout for it.
Has anybody from here heard about it if yes please send me pcb

 

[black]

PetruV ipa 800 av 800 made ​​by Anthony Holton forum is kon dj Leco's scheme is much better