100W Ultimate Fidelity Amplifier

[wiljj78]

Awesome!! Thanks....

 

[44250]

Awesome!! Thanks....

not quite,take a look at number of output pairs and PSU voltage...

these from my files are with three pairs of output transistors and +/-50V supply - his is with four pairs of output transistors and +/-80V supply.

so his one is a bit extended...and i don´t have files for that one.

 

[wiljj78]

not quite,take a look at number of output pairs and PSU voltage...

these from my files are with three pairs of output transistors and +/-50V supply - his is with four pairs of output transistors and +/-80V supply.

so his one is a bit extended...and i don´t have files for that one.

No worries, will manage to do that...

Thanks dude...

Regards,

 

[44250]

No worries, will manage to do that...

Thanks dude...

Regards,

any time i can and know... 🙂

 

[comasus]

Can I remove emitter resistors .33r 5watt ?

 

[Tekko]

Can I remove emitter resistors .33r 5watt ?

Why would you wanna do that ?

These are there for a reason, to aid current sharing and ensure stability.

 

[wattaniya]

hi apex sir,
here is the ax20 ,
10mv for emitter resistor, dc offset 20mv.

 

[apexaudio]

hi apex sir,
here is the ax20 ,
10mv for emitter resistor, dc offset 20mv.

Nice work, can you share protect circuit?
Regards

 

[wiljj78]

AX-20 4 pair

Mr. Mile what is the Max. power of this ax-20 with 4 pair?
I hope it's correct.

 

[wattaniya]

hi willj .replace the transistor with 2n5551.

 

[wattaniya]

hi apex sir, here is protect circuit.
if u want the layouts i will prepare and share it.

 

[wiljj78]

hi willj .replace the transistor with 2n5551.

Thanks nazirdigi...

 

[wiljj78]

Merry Christmas to all.....

 

[wiljj78]

C6

Hello nazirdigi,

I found C6 100uf/16V in reverse polarity in drawing, but as per shema negative is connected to base of Q2 (2N5401), is this still works on yours?

Regards,

 

[shravanth]

hello sir I made AX-14 amp
Is I should connect 0.1uf capacitor from power supply ground to input ground

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

 

[olafk]

New project

Merry Christmas to all,

I have designed a new board because I want to use my own components from the shelf. I've made ​​some changes to the layout. The original layout is from Post 1740.

regards Olaf

 

[44250]

Merry Christmas to all,

I have designed a new board because I want to use my own components from the shelf. I've made ​​some changes to the layout. The original layout is from Post 1740.

regards Olaf

would you post all files for us? you are drawing nice pcb´s and etch them nice too! what chemicall do you use?

Merry Christmas from me too!

 

[olafk]

Hi,

here is the screenshot of the PCB (Sprint Layout). I can share all the Layout-files or PDF but it is NOT tested. I have one PCB in progress.

regards Olaf

 

[olafk]

Sorry, forgot. I use a inkjet-printer on film and ferric chloride (correct enlish?) for etching.

 

[wattaniya]

Hello nazirdigi,

I found C6 100uf/16V in reverse polarity in drawing, but as per shema negative is connected to base of Q2 (2N5401), is this still works on yours?

Regards,

hi wiilj,
ur correct, but its working,
so apex sir will clarify that.