Well, that's the most useless post I've read today.
Thanx dick...
OTOH if it was a SMPSU, you'd be *mostly* correct apart from that idiocy with square roots.
I did say it was from memory, idiot, or can't you read?
And yes, I was thinking in regards to a SMPS, my bad there...
That advice (to use an oscilloscope) is *DANGEROUS*
and unless you have a CAT II or better rated isolated differential probe + the knowledge how to use it correctly is likely to result in you blowing up your scope or possibly even your electrocution.
What scopes or people these days are still using CAT II probes?
Another thing Poindexter, I was just giving an example of using a scope to determine phasing.
If I were to tell the OP to rent a scope or sponge one from a friend, then yes, I should also tell him of the risks.
I would have waited for his reply in regards to him having a scope.
If he does have a scope, then he should have the knowledge on how to use it, as well as being aware of the safety
aspects when measuring live circuits.
Its yobbos like you who just jump in and criticise, flouting safety issues, yet you
should be going around the electronics part of this Forum and condemn everyone
who suggest a noob to go and check voltages in the primary of a SMPS because they
could risk electrocution.
The OP should be made aware of this, but this particular OP seems to have had
some experience fooling with power supplies.
Relayer