Variac question
wrote:
Phil Allison wrote:
Well, they were standard & widespread in the 1990s.
** Live chassis tube TVs and radios " standard & widespread " in the 1990s ????
Live chassis TVs were very common in the 90s.
** But not TUBE sets as the above requires.
I have a 1990s 12 inch GE color portable where the whole chassis is live and only isolated by the antenna balun.
FYI:
The OP did NIT even mention "live chassis" so his post was wrong and so is yours.
I was responding to your mention of 'hot chassis' not the OP's.
What the OP mentioned is irrelevant.
** Bull****. I was responding to the OP post - so what he wrote is totally relevant.
Contemporary use of 1:1 isolation transformers would be for
servicing devices like SMPSs.
It removes the direct path to ground of the electrical power,
significantly reducing the chance of death.
** That is wrong.
Using an isolation transformer allows one to connect the common
rail ( or any other point) of an off-line SMPS to safety ground.
After which you can use a scope in the normal way to investigate
various waveforms, maybe small ones like MOSFET drive signals.
One can, but they are also used to reduce shock risk.
** Biggest safety myth out.
Using an isolation transformer unnecessarily INCREASES electric shock risk.
The UK government certainly disagrees with you.
** More arrogant bull****.
We have used isolation transformers for decades in bathrooms ....
** FFS you congenital context shifimg **bull****ter **
- the TOPIC here is electronics servicing with an Iso in the AC supply!!!!!!
Go away, stay there.
..... Phil
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