Capacitance multiplier from Zen variation 3

kacernator · 9th July 2011, 07:28 PM

Hi,

is the schematics for the negative rail allright? Isn´t the IRFP9240 mosfet drawn wrong? Shouldn´t it be that Drain is input and Source is output?

Thanks.

Nelson Pass · 9th July 2011, 07:34 PM

You are so right.

kacernator · 10th July 2011, 11:17 AM

I have some IRFP250 which I could use instead of IRFP240. But is it wise to use 250 together with 9240 in bipolar regulated supply as 250 will have lower output impedance than 9240? Is this "imbalance" problem?

Thanks.

Zen Mod · 10th July 2011, 12:06 PM

just go for it

Skorpio · 12th July 2011, 11:43 AM

Isn't Q2 turned upside down? Source must go to -25V...

kacernator · 12th July 2011, 12:57 PM

Quote:

Originally Posted by Skorpio

Isn't Q2 turned upside down? Source must go to -25V...

Yes, just read the first post. Dont only look at pictures

.

10th July 2011, 11:17 AM	#3
kacernator diyAudio Member Join Date: Jan 2008	IRFP250 I have some IRFP250 which I could use instead of IRFP240. But is it wise to use 250 together with 9240 in bipolar regulated supply as 250 will have lower output impedance than 9240? Is this "imbalance" problem? Thanks.

10th July 2011, 12:06 PM	#4
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	just go for it __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb

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9th July 2011, 07:34 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	You are so right.

12th July 2011, 11:43 AM	#5
Skorpio diyAudio Member Join Date: Mar 2004 Location: Denmark	Isn't Q2 turned upside down? Source must go to -25V...

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