500W PA amplifier with Limiter

[apexaudio]

I have some problems with my B500, there is high voltage on pin B driver TR. So, i dont dare connecting to final TR.
I try to measure B to B driver TR, there isn't voltage on it.
I try to measure at pin 1 NE5532, when power turn ON the voltage is increase from 0V to 13Vdc slowly. is it true....????

I have a little question, when normal conditions without input signal,
1. how the voltage at pin 1 NE5532?
2. how the voltage at R15 (1k)?
3. how the voltage at R16 (1k)?

Sorry with my bad english...
Thanks before...

You must connect final TR, use 10R instead fuses for test.

 

[Paijoz]

"use 10R instead fuses for test"
Sorry Sir, Did You mind replacing fuses with 10R resistors?

 

[renzuken101]

How can i print the actual pcb layout ?

 

[JOHN BALI]

Single Pair PCB Finished

Finally I made it, my PCB....
It's time for shopping...

I'm sorry for my first picture attached, they are reversed.
thx

 

[apexaudio]

Finally I made it, my PCB....
It's time for shopping...

I'm sorry for my first picture attached, they are reversed.
thx

Hand made pcb

 

[JOHN BALI]

Hand made pcb

yes it's hand made.
made with DIY tolls too, may someone want to made it like my way?

Perhaps I made it works soon
I want to ask, for testing use 10R/...watt? maybe 5watt or bigger?
Can I change 43k resistor with 47k & 33k with 37k(27k + 10k)?

Thanks you very much Sir

 

[JOHN BALI]

I use Eagle 5.6 Nice software.

Ok I will try it
thanks

 

[apexaudio]

yes it's hand made.
made with DIY tolls too, may someone want to made it like my way?

Perhaps I made it works soon
I want to ask, for testing use 10R/...watt? maybe 5watt or bigger?
Can I change 43k resistor with 47k & 33k with 37k(27k + 10k)?

Thanks you very much Sir

What water-resistan permanent marker you use, and what acid?
For 43k use 33k+10k in series.
Regards

 

[renzuken101]

A, B GND IN

good day, can somebody pls tell me what is the purpose of A, and B found with the GND, IN, A, B near the input side of the schematic. thnx

 

[apexaudio]

good day, can somebody pls tell me what is the purpose of A, and B found with the GND, IN, A, B near the input side of the schematic. thnx

A, B pins is for bridge mode

 

[renzuken101]

Thank you very much for the reply sir. Greatly appreciated it. ^_^

 

[JOHN BALI]

What water-resistan permanent marker you use, and what acid?
For 43k use 33k+10k in series.
Regards

I use the big permanent marker, draw with 2 layer for best result.
My modified pencil tool is very helping
The acid is water + FeCl3(ferryclorida from e-shop at Denpasar city)
btw I'm just a villager but not so far from the main City (55km)
Now waiting for few more component that my bro will buy tomorrow, we must be patient for best result are we?

Okay I will use 33k+10k
Thanks

Regards

 

[soerdjanto]

or like this

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

 

[apexaudio]

or like this

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

Professional work

 

[Paijoz]

Nice PCB Kang Soerdj....

 

[JOHN BALI]

or like this

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

Wah kalah jauh nih saya,...
Ayo kang Soer lanjut sampai bberdendang

I'm loose, I just a amateur
Come on Kang Soer make it singing

 

[JOHN BALI]

Finally I made it, my PCB....
It's time for shopping...

I'm sorry for my first picture attached, they are reversed.
thx

Maybe its should be like this
just wanna fix my mistake
I hope can do it right until this amp works in the right way...
Please help if I go wrong way

Regards

 

[renzuken101]

Good day guys can somebody pls share me his pcb design and schematic diagram for the protection circuit. Any help would be much appreciated ^_^

 

[JOHN BALI]

This is new version

Good day guys can somebody pls share me his pcb design and schematic diagram for the protection circuit. Any help would be much appreciated ^_^

This is my new pcb design, change of 43k with 10k + 33k
another one is on page http://www.diyaudio.com/forums/solid-state/164208-500w-pa-amplifier-limiter-176.html

enjoy

 

[JOHN BALI]

One step to the test

Hi everybody...
I'm just finished 1 pair
Hope everything gonna be okay
a few modification has been made