Audio amp. to IXFH26N50, please, suggest me an application/circuit to this component

destroyer X · 16th December 2009, 09:31 AM

I am organizing my parts and i have found several fets, a lot of them, and i want to find an application to them.

This is the first one, seems to be the most powerfull i have, there are 4 units here, can you suggest me an application using 80 volts simetrical supply?

The hell thing, that makes me resistant to Fets, is that they use extra parts, a zener to protect the gate, i think this part, because needed, should be already included inside the chip, as it needs to work with that protective zener.

Something alike a car without the shock absorbers or bumpers... we need them, how to sell a car without them (ahahahaha!, they are doing that down here in Brazil...no more bumper!... crazy world)

regards,

Carlos

Eva · 10:16 AM

These are 500V 26A MOSFET with ultrafast body diodes intended to be used in phase-shifted full-bridge SMPS, sinewave inverters, etc...

How about a SMPS? Using them for a linear amplifier will be kind of wasting them, particularly given the 500V d-s rating and the ultrafast body diode.

Some MOSFET include gate zeners, but in many circuits gate voltage is already inherently clamped by the drive circuit so no zeners at all are required. Also, for general purpose gate protection without disturbing MOSFET operation, two back-to-back zeners are actually required, some circuits use negative gate bias.

Do race cars have shock absorbers or bumpers? Electronics is like race driving and electricians are like city drivers in a jam (requiring bumpers).

If you stopped complaining and were open to more recent components and technologies you would instantly feel much younger. Sometimes your comments make other people (and yourself) feel you as if you were much older. I'm getting used to developing circuits having 500 parts, mostly SMD... Now components with leads feel nasty, SMD is much easier to rework. Oh, I have to increase R174 and C97...

wahab · 16th December 2009, 10:45 AM

hi, carlos..this one has very high input capacitance...
furthermore you ll have great trouble stabilizing the quiescent
current...his only place is a class

wahab · 16th December 2009, 10:46 AM

in a class A amp...

regards,

wahab

destroyer X · 16th December 2009, 01:03 PM

Was good to see you around.

regards,

Carlos

16th December 2009, 10:10 AM	#2
Eva diyAudio Member Join Date: Oct 2003 Location: Near the sea	These are 500V 26A MOSFET with ultrafast body diodes intended to be used in phase-shifted full-bridge SMPS, sinewave inverters, etc... How about a SMPS? Using them for a linear amplifier will be kind of wasting them, particularly given the 500V d-s rating and the ultrafast body diode. Some MOSFET include gate zeners, but in many circuits gate voltage is already inherently clamped by the drive circuit so no zeners at all are required. Also, for general purpose gate protection without disturbing MOSFET operation, two back-to-back zeners are actually required, some circuits use negative gate bias. Do race cars have shock absorbers or bumpers? Electronics is like race driving and electricians are like city drivers in a jam (requiring bumpers). If you stopped complaining and were open to more recent components and technologies you would instantly feel much younger. Sometimes your comments make other people (and yourself) feel you as if you were much older. I'm getting used to developing circuits having 500 parts, mostly SMD... Now components with leads feel nasty, SMD is much easier to rework. Oh, I have to increase R174 and C97... __________________ I use to feel like the small child in The Emperor's New Clothes tale Last edited by Eva; 16th December 2009 at 10:16 AM.

16th December 2009, 01:03 PM	#5
destroyer X diyAudio Member Join Date: Feb 2004 Location: Recife - Brasil Northeast	Thank you Eva and Wahab Was good to see you around. regards, Carlos __________________ Try to build an amplifier folks ... it is pure adrenaline!.. when not work first time, then becomes a nice challenge...and we usually overcome the trouble... and we feel very well to be mastering the machine.

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16th December 2009, 10:45 AM	#3
wahab diyAudio Member Join Date: Nov 2009 Location: algeria/france	hi, carlos..this one has very high input capacitance... furthermore you ll have great trouble stabilizing the quiescent current...his only place is a class

16th December 2009, 10:46 AM	#4
wahab diyAudio Member Join Date: Nov 2009 Location: algeria/france	in a class A amp... regards, wahab

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