150W MOSFET Amplifier with IRFP250x2

[desislavov]

Maybe you should focus on these arrangements.

yes , you`re right ...I didn't look right ... 😀

 

[kandimba]

Hi M. Mile, this is my contribution for NX300.

 

[apexaudio]

Hi M. Mile, this is my contribution for NX300.

Nice work, go to N20 🙂

 

[kandimba]

Hi M. Mile, thanks for your reply. I am gona do that, but can you put more components there...🙂. By the away, do you have some electronic circuit with 2 NTC sensor, with only 1 fan. Thanks in advance

Pozdrav

 

[apexaudio]

Hi M. Mile, thanks for your reply. I am gona do that, but can you put more components there...🙂. By the away, do you have some electronic circuit with 2 NTC sensor, with only 1 fan. Thanks in advance

Pozdrav

 

[kandimba]

Thanks for your quik reply about fan. About your N20, I can see in Bias arrangement, NTC 47K conected to C and E of 2N5551, should both stay in contact with main heathink?

Pozdrav

 

[apexaudio]

Thanks for your quik reply about fan. About your N20, I can see in Bias arrangement, NTC 47K conected to C and E of 2N5551, should both stay in contact with main heathink?

Pozdrav

Only NTC is on main heatsink.

 

[hpavictor]

Siliconix :

 

[Freecrowder]

So from what I can tell all the board design for these amplifiers are meant for personal consumption. Does anyone have boards for sale or gerbers to send to PCB supply houses?? I need something like the nx-400 to drive my Maggies would love to buy some boards and try these amps out.

 

[kandimba]

Only NTC is on main heatsink.

Hi M. Mile, in the input par transistor 2N5551, the second one are feed by a resistor without value, wich value should be.

Pozdrav

 

[apexaudio]

Hi M. Mile, in the input par transistor 2N5551, the second one are feed by a resistor without value, wich value should be.

Pozdrav

2k2

 

[apexaudio]

12V DC Fan speed control.

 

[stewin]

cool schematic apex , does it go off when the heat sink is cold ?

 

[apexaudio]

cool schematic apex , does it go off when the heat sink is cold ?

100R/2W resistor is for speed with cold heat sink, speed rise linear with heat.

 

[desertstorm]

Maybe you should focus on these arrangements.

Sir what is supply voltage of nx400 thans

 

[kandimba]

Hi M. Mile, the first skecht APEXN20

 

[apexaudio]

Hi M. Mile, the first skecht APEXN20

Nice work...

 

[desertstorm]

Nice work/
Regards

Sir Mile can i add zobel network in NX400 Sir?

 

[apexaudio]

Sir Mile can i add zobel network in NX400 Sir?

Yes

 

[macd]

Good Day Sir Mile..

I want to make NX300...which protect circuit can I use?

Regards,
macd