2x9V and 200VA xformer, what to do?

kmj · 6th October 2005, 11:06 AM

As the topic says.
I just found some cheap xformers with dual 9v windings and about 200VA each. Is there anything fun to do with these?
Anything goes.

best regards
Ken

motherone · 6th October 2005, 11:20 AM

Get two of the transformers. Take one transformer and put the windings in series to give you 18v @ 11 amps. Then do the same on the other. That'll give you 25 VDC or so after rectification. Perfect for a LM3875 gainclone, or even better for a LM3886 or LM4780 (paralleled) into a 4 ohm load.

Then make yourself a nice 6 channel home theater amp

Or just have massive overkill for your power supply.

autoexec · 6th October 2005, 11:37 AM

9 * 2^1/2 is about 13v

you could run car amps off it if you want

6th October 2005, 11:06 AM	#1
kmj diyAudio Member Join Date: Feb 2004 Location: Falkenberg	2x9V and 200VA xformer, what to do? As the topic says. I just found some cheap xformers with dual 9v windings and about 200VA each. Is there anything fun to do with these? Anything goes. best regards Ken

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6th October 2005, 11:20 AM	#2
motherone diyAudio Member Join Date: Apr 2003 Location: Seattle	Get two of the transformers. Take one transformer and put the windings in series to give you 18v @ 11 amps. Then do the same on the other. That'll give you 25 VDC or so after rectification. Perfect for a LM3875 gainclone, or even better for a LM3886 or LM4780 (paralleled) into a 4 ohm load. Then make yourself a nice 6 channel home theater amp Or just have massive overkill for your power supply.

6th October 2005, 11:37 AM	#3
autoexec diyAudio Member Join Date: Oct 2003 Location: Maroubra, Sydney, Australia	9 * 2^1/2 is about 13v you could run car amps off it if you want

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