is possible?

MaXiZ · 19th December 2003, 01:50 PM

SkinnyBoy · 19th December 2003, 01:57 PM

why?

and I don't think the 3534 will drive 4 mosfets from each output very happily...

EDIT: If one transformer won't give you enough power, you would be better off using 2 seperate controllers to drive the 2 transformers... this way you can use one transformer for the positive rail, and one for the negitive and set them EXACTLY the same...

Vigier · 19th December 2003, 02:03 PM

Indeed, the 3524 isn't able to do that. You should use a BD-transistor at the outputs (EA, EB) to switch the IRF's.

See http://www.sound.westhost.com/project89.htm for that.

Grtz, Joris

SkinnyBoy · 19th December 2003, 02:05 PM

whatever you end up doing, I suggest you make a small switchmode powersupply first and get it working, and know what you are doing from a little experience...

MaXiZ · 19th December 2003, 02:09 PM

Quote:

Indeed, the 3524 isn't able to do that. You should use a BD-transistor at the outputs (EA, EB) to switch the IRF's.

U're absolutely right. I've missed them in the schematic...

Quote:

suggest you make a small switchmode powersupply first and get it working, and know what you are doing from a little experience

Already done a working one with +/-15 and +/-21 output from it my question were if were possible to do my proposed schematic with bd as Vigier say!

19th December 2003, 01:50 PM	#1
MaXiZ diyAudio Member Join Date: Jun 2003 Location: Italy	is possible?

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19th December 2003, 01:57 PM	#2
SkinnyBoy Banned Join Date: Nov 2002 Location: Adelaide, Australia	why? and I don't think the 3534 will drive 4 mosfets from each output very happily... EDIT: If one transformer won't give you enough power, you would be better off using 2 seperate controllers to drive the 2 transformers... this way you can use one transformer for the positive rail, and one for the negitive and set them EXACTLY the same...

19th December 2003, 02:03 PM	#3
Vigier diyAudio Member Join Date: Nov 2002 Location: Netherlands	Indeed, the 3524 isn't able to do that. You should use a BD-transistor at the outputs (EA, EB) to switch the IRF's. See http://www.sound.westhost.com/project89.htm for that. Grtz, Joris

19th December 2003, 02:05 PM	#4
SkinnyBoy Banned Join Date: Nov 2002 Location: Adelaide, Australia	whatever you end up doing, I suggest you make a small switchmode powersupply first and get it working, and know what you are doing from a little experience...