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Chip Amps Amplifiers based on integrated circuits

ac transformer split positive for dual + use work?
ac transformer split positive for dual + use work?
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Old 13th May 2020, 02:42 PM   #1
mitch69strange is offline mitch69strange
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Join Date: May 2020
Default ac transformer split positive for dual + use work?

Tell me if I can run two wires from positive on this variac thing to the dual positive power inputs on this type of amp? Also, this transformer has ground and negative wall socket plug. Which do I wire to amp negative? I was planning on turning the transformer up to amps full 30VAC and adding thermal switch-controlled 5-12VDC fans to amp for cooling. Powering some 400 Watt speakers.

I am not real good at this, just a guy with too much fighting history having damaged my hearing looking for loud and clear audio.
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Old 13th May 2020, 03:09 PM   #2
JonSnell Electronic is online now JonSnell Electronic  United Kingdom
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Definitely not. This is a Variable Auto Transformer.

Transformers do not have a positive and negative, it is RAW AC and as it is not isolated, VERY DANGEROUS!
Use a proper power supply.
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Old 13th May 2020, 07:08 PM   #3
christiang is offline christiang  Canada
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These are good to soft start a system under test etc. but there is only one winding! Not a transformer, so stay away as AC line is potentially sent directly to output.

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Old 13th May 2020, 07:44 PM   #4
rayma is offline rayma  United States
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Not possible, and there is NO isolation. Very dangerous.

This variable autotransformer is ONLY for testing, not for routine use.
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Old 13th May 2020, 07:51 PM   #5
wiseoldtech is offline wiseoldtech  United States
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It seems mitch69 doesn't know a thing about electricity and the LETHAL DANGERS involved in LINE CONNECTED transformers.
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