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Old 23rd April 2003, 05:06 PM   #1
sirtiff is offline sirtiff  Canada
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Default Power Supply problems

Hey guys,

I'm just trying to build my first amp and I've tracked down all the parts for the Leach SuperAmp. The only problem is the power supply. From what ive noticed, a high powered one is very hard to find. I know Victoria magnetics (i think thats the name) builds them, but digikey or arrow (the suppliers i have found most of my parts from already) do not supply. Does it turn out that i have to specail order through Victoria (more shipping and handeling fees donated, besides arrow and digikey)? Don't get me wrong, i love the services shipping/handeling offers, but there is only so much i would like to donate.

Anyone know any alternate suppliers in western Canada who would have a 93V 6-8A transformer.

Another question (excuse my ignorange): Are there any other ways of obtaining this kind of power through different setups (other than expensive transformers)?

Don't be afraid to ICQ or MSN me about this topic, i'm rarely offline.
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Old 23rd April 2003, 05:56 PM   #2
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Plitron is in Canada but I think they are in the east. I got a 1500VA from them for the stereo version on the same amp.

Leach SuperAmp Photos

Here
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Old 23rd April 2003, 05:59 PM   #3
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By the way, you should be looking for a transformer which is around 60V per secondary with two secondaries. This could be seen as 60-60 or 60-0-60 or 120CT. This will give you about 90V with 120V on a 115V primary and large filter caps.
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Old 3rd May 2003, 04:53 AM   #4
sirtiff is offline sirtiff  Canada
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Hey thanks allot man,

So this is what i could finnaly get together. I poked around our local buy and sell and found a Variac that put out 10 Amps -120V. So I now think it will be possible to get the thing to work reguardless of what the voltage is.

A nice retired electrician sold it too me for 40 CDN, allong with a bridge rectifier good to 230V and a few fuse holders. A suber nice deal.

So I will hopefully go to the lab next week and start to plunk around with some designs.

Oh BTW: I really like your Leach amp you have... you did an excellent job, especially the heat sinks (what rating are they by the way? did you go with the reccomended 0.5C/W?) I'm thinking of putting mine in a plexiglass chassis (i think you should have too, especially with your symmetry).
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