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-   -   power amplifier mosfet (http://www.diyaudio.com/forums/solid-state/41843-power-amplifier-mosfet.html)

j.p-ni- 1st October 2004 02:41 AM

power amplifier mosfet
 
i need schematics, for mosfet amplifiers,with 100w or + .....for use in my car.....please....my english bad....i am from brazil

Geek 1st October 2004 06:46 AM

That's OK, my spanish is bad :D

I found this for you:
http://www.google.ca/search?hl=en&ie...0W&btnG=Search

The reason I refer you to Google, is you can do a search in spanish :)

Good luck!! :D

mandat 1st October 2004 07:38 AM

J.p-ni- or DestroyerX can you explain what language do you speak?
You mean, not me.

ElectroPower 1st October 2004 11:01 AM

Spanish language??? Oh my god!
Thatīs Portuguese language Geek :bigeyes: , the native language of Brasil is portuguese, spanish is very diferent... :smash:

j.p-ni-, here have many mosfet schematics for home, for car, I donīt no, maybe, if you search on google...: http://www.audiofanatic.it/Schemi/Ti..._finaliSS.html

Cheers

Geek 1st October 2004 12:26 PM

Quote:

Originally posted by ElectroPower
Spanish language??? Oh my god!
Thatīs Portuguese language Geek :bigeyes: , the native language of Brasil is portuguese, spanish is very diferent... :smash:

EEEEEEEP! :Ouch::smash:

j.p-ni- 1st October 2004 03:43 PM

i need amplifier simple e strong, with voltage + 30 and -30, or +....
please, because my smps the ouput voltage +30 and -30 volts....

mandat 1st October 2004 06:47 PM

You can find link below with power amplifier (opamp at the input stage & complementary pair of MOSFETs at the output stage). Unfortunatelly, pages are in Polish. In the third link you can find a PCB layout. At the bottom you can find the specification of this amp. If you will be interested in, mail me and I try help you.
http://www.q-audio.pl/
http://q-audio.dis.pl/gallery/
http://www.audiostereo.pl/forum_wpis...mat=5755&p=5#k

semiconductors: OPA552AP/IRFP240 (Farchild]/IRFP9240 (I.R.)/TL431
R+C: 7 + 10
PSU: +/- 28V,
gain: +41V/V
load: 4 Ohm
quiscent current:120mA
THD+N: 0.008% (22Hz to 22kHz, P =1 to 10W)
THD+N: 0.014% (22Hz to 22kHz, P = 11 to 40 W)
THD+N: 0.6% (22Hz to 22kHz, P = 41 to 75W)
SR: +22/-18V/us


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