Irf540/irf9540 Amplifiers Schematic Collection

[zox2003]

Any other amp?

UPUPA,

do you have any other schematic with these MOSFET's that is simple but works good.I have seen long time ago something with OP AMP on input,BD139/140 drivers ,BD139 VAP, 540/9540 output for 100w power but I do not have that schematic any more.I would like to try that.What do you think?If you have it please post it...



Thanks

 

[zox2003]

so any schematic?

So anybody has working amps with irf540/9540 that wants publish working design?

 

[Upupa Epops]

Remember forever, that simply connections with mosfets can't work good, although NP claim contrary . Good driving of these devices ( and good driving is not in this case easy ) lead to the little bit complicated circuits - any " one opamp + two transistors " .

 

[zox2003]

ok...

Ok ..Can you post something that is tested ( works OK) and not too complicated.

Thanks

 

[Upupa Epops]

If you take it like some exercise for first experience with mosfets, take some simply circuit which you find, but I say again, results will be " no glory " . My start point with mosfets was amps of E. Borbelly, which are relative complicated ( from your look ) and I have any " less comlicated " .

 

[zox2003]

so...

Can you post it,please?

 

[Upupa Epops]

Look at www.borbelyaudio.com - there are his last products but also little bit theory about fet and mosfet amps ( but E. B. use lateral types, not vertical ones ).

 

[zox2003]

schematic????

PLease can you post schematic?


Thanks

 

[Upupa Epops]

If you understand me correctly, I'm telling you, that I have any simple connections , 'cos they aren't good.

 

[zox2003]

English?/?

Then you should write:

"I do not have any"


OK?

 

[SAEED JOON]

im looking for a simple irf540-9540 base amp, so i tryed at last 5or 6 deferent design.
bud no one works good.
most of them has high frequancy distortion at correct bias.
:-s