150W MOSFET Amplifier with IRFP250x2

[thole]

Apex quasi 2n3055 NPN only

Quasi PNP

Need some advice.... Thanx


Regards

 

[thole]

REV

Quasi PNP & NPN

Some advice will be apreciated. Thanx


Regards

 

[bimo]

Quasy 2N3055: R21 = 100 ohm paralel with diode 1N4148 and 22nf cap. (Baxandall improvement).

 

[thole]

baxandal??

hello bimo, can you show/write in schematic. (baxandal improvement). sorry, i'm beginer. i just draw schematic from mr. Mile schematic. thanx

regards

 

[thole]

NX-14

NX-14 with some mod. thanx

regards

 

[bimo]

hello bimo, can you show/write in schematic. (baxandal improvement). sorry, i'm beginer. i just draw schematic from mr. Mile schematic. thanx

regards

 

[thole]

Thank you bimo, i will try to build, so it can compare with criminal schematic. I hope will increase improvement. Justeru wait comment from mr. Mile about this.

 

[thole]

sorry for mistake typing

Thank you bimo, i will try to build, so it can compare with criminal schematic. I hope will increase improvement. Justeru wait comment from mr. Mile about this.

criminal -> original
justeru -> just


regards

 

[thole]

Any change part??

NX-14 with some mod. thanx

regards

Hello mr. mile.
Any change part if use IRFP260N & 2SK2698 in NX-14??
i still got DC out 29V, use 2SK2698, i dont know where is the problem.

 

[apexaudio]

Hello mr. mile.
Any change part if use IRFP260N & 2SK2698 in NX-14??
i still got DC out 29V, use 2SK2698, i dont know where is the problem.

Conect input gnd to psu gnd

 

[thole]

i do that still got 9v, & the bias minimum.

 

[thole]

Hello mr. mile.
Any change part if use IRFP260N & 2SK2698 in NX-14??
i still got DC out 29V, use 2SK2698, i dont know where is the problem.

Find the problem. Fake transistor. Singing now. With 30volt, bias 10mv only(test). Thank you.


Regards

 

[apexaudio]

Find the problem. Fake transistor. Singing now. With 30volt, bias 10mv only(test). Thank you.


Regards

View attachment 464761 View attachment 464762

Nice work,
Regards

 

[thole]

need more output

Need some advice.... Thanx


Regards

can add more mosfet, like AX-400?? maybe NX-400 shematic please.
this mosfet amp can have more output power N-mosfet? like 3 each side?
i have a lot IRFP260 from smps scrab.
thank you

regards

 

[apexaudio]

can add more mosfet, like AX-400?? maybe NX-400 shematic please.
this mosfet amp can have more output power N-mosfet? like 3 each side?
i have a lot IRFP260 from smps scrab.
thank you

regards

Use this schematic for 3 pairs,
Regards

 

[thole]

voltage & bias

recomended max bias & voltage??

 

[thole]

protect

which protect can add for this schematic(NX-400)??

thanks

regards

 

[apexaudio]

which protect can add for this schematic(NX-400)??

thanks

regards

Use protect with NE555,
Regards

 

[sonal kunal]

Just completed layout for NX- 3 pair OP today . I'll be making revisions in next few days, please point mistakes on layout.

Thanks Juan for sending me sprint layout macros.

 

[thole]

Great pcb design, i can't doing like yours in 2 day. Thnk for sharing, i will make yours pcb for my reference. Any sprint file?

Thanks
Regard