200W MOSFET CFA amp

[Krisfr]

This is PS regulator with MOSFET output transistor. It works similar as the one with BJT output but can provide higher current before the current sensing go on. Maximal current per rail is 20 A and can be set to 17 A if one diode in the current sensor was bridged.
If anyone interested in a PCB, please, let me kow.
Damir

Very nice Damir, how much voltage will it stand? Will it do 100 volts and 20 amps? Again great work...

 

[joshvi]

Rcvd the PCBs one week back.Thanks

 

[dadod]

Very nice Damir, how much voltage will it stand? Will it do 100 volts and 20 amps? Again great work...

Hi Chris,
It was designed for +-75 V input and the output is about 6 to 7 V lower.
No need for more then that is needed in my opinion, you can have a bit more then 200W/8 with it. If needed more better to go bridged. High voltage transistors are distinguished and high voltage high capacity electrolytic capacitors are expensive.

 

[scalpel]

Good day Damir.Do you still have 120w boards and a ps board available?

 

[dadod]

Good day Damir.Do you still have 120w boards and a ps board available?

Yes I have enough AMP boards (both those with no soldering mask errors and those with small soldering mask errors) and some PS regulator boards.

 

[scalpel]

Ok thank you.I am sending you a pm.

 

[dadod]

Ok thank you.I am sending you a pm.

Manuel, haw is going with first boards?
BR Damir

 

[scalpel]

Have not received them yet.I have a friend who is very keen on my symasym amp so your're amp will replace it.BR Manuel

 

[dadod]

Have not received them yet.I have a friend who is very keen on my symasym amp so your're amp will replace it.BR Manuel

Manuel, that is very strange. I can see from tracking no. RB945220142HR that first delivery was unsuccessful attempt date 10.02.2016.
Please check with your post office.

 

[scalpel]

Got it.Thanks

 

[vac231]

I see many 3mm red and green LED. How to choose them ?

 

[dadod]

I see many 3mm red and green LED. How to choose them ?

Of what LEDs are you talking about, amp or PS regulator?

 

[vac231]

both amp and regulator.

 

[dadod]

both amp and regulator.

For the regulator just ordinary red and green LEDs, red means regulator protection on, green means power on.
For the amo also ordinary red just try to match the voltage at let say 2 mA.
I used this one.

 

[vac231]

Ok! Thanks.

 

[dadod]

Building case, the 100W CFA case.

 

[dadod]

First listening in stereo.

 

[egra]

Looks great! Especially in "Big Boy" enclosure Are you using a single regulator board for both side? What's your listening impressions? Are there PCB's available?

Thank You

 

[9827wAlEs]

First listening in stereo.

Beautiful~

 

[dadod]

Looks great! Especially in "Big Boy" enclosure Are you using a single regulator board for both side? What's your listening impressions? Are there PCB's available?

Thank You

Yes, I am using a single regulator boards, and it's to early to talk about listening impression, so far so good.
I still have some boards.