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Old 19th March 2010, 09:30 PM   #141
wahab is offline wahab  Algeria
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Originally Posted by apexaudio View Post
Thank you, but I see much diferent design.

There s only the Vas that is different...
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Old 19th March 2010, 10:33 PM   #142
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Originally Posted by wahab View Post
There s only the Vas that is different...
Actually, everything is different exept full simetry and using IRFPs.

Last edited by apexaudio; 19th March 2010 at 10:35 PM.
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Old 26th March 2010, 10:54 PM   #143
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Originally Posted by kenpeter View Post
You can use mine as a shortcut to get started, if you wish.
Don't take my doubts about needing a cascode to mean you
should have to start the translation over again from scratch.
Thanks. Where is your LTspice file ?
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Old 26th March 2010, 11:04 PM   #144
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MOSFET Amplifier IRFP240/IRFP9240

Post# 108, but needs changes as described in #109 and #110 before it (the sim) works.
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Old 28th March 2010, 07:45 PM   #145
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Default Gnd

Ground wireing
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Old 5th April 2010, 04:18 PM   #146
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Default Apex hv350

Mosfet amplifier with some changes.
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Old 5th April 2010, 06:37 PM   #147
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Hi all,

since IRFP9240 was hard to find here, I used IRF640/9640 (TO-220) with change in PCB design.

Hope it will be helpful to others.
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Old 5th April 2010, 06:58 PM   #148
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Originally Posted by jash2008 View Post
Hi all,

since IRFP9240 was hard to find here, I used IRF640/9640 (TO-220) with change in PCB design.

Hope it will be helpful to others.
Thanks, 100nF of Zobel network must be conected on P GND, no IN GND. P GND and IN GND can not be conected together, see post #145 and original PCB.
Regards Mile

Last edited by apexaudio; 5th April 2010 at 07:06 PM.
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Old 5th April 2010, 07:10 PM   #149
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[IMG] http://www.federmann.cz/images/stori...QQF-55-505.gif [/ IMG]

Has simplified and more reliable version.
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Old 5th April 2010, 07:15 PM   #150
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Originally Posted by Federmann View Post
[IMG] http://www.federmann.cz/images/stori...QQF-55-505.gif [/ IMG]

Has simplified and more reliable version.
Reliable
DC Servo MOSFET Amplifier
Regards

Last edited by apexaudio; 5th April 2010 at 07:21 PM.
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