G
Greg Hansen
- Jan 1, 1970
- 0
I don't have a lot of experience with things that plug into the wall
outlet. But if I wanted, say, a +/- 12 volt power supply, I understand
I should begin with something like a 110V to 30V transformer with a
center tap on the secondary, to get +15V and -15V. But I'm wondering,
then, what to do with grounds? The ground wire from the wall should be
connected to the chassis for safety. And the center tap would define
the ground relative to +15V and -15V. But if that's also connected to
the chassis, would that be about 15 volts above the neutral line and act
like a short circuit?
And for my next question, if I don't have an appropriate transformer
with a center tap, is it equivalent to connect two transformers in
series with the connection between the secondaries acting as a center tap?
I appreciate any illumination.
outlet. But if I wanted, say, a +/- 12 volt power supply, I understand
I should begin with something like a 110V to 30V transformer with a
center tap on the secondary, to get +15V and -15V. But I'm wondering,
then, what to do with grounds? The ground wire from the wall should be
connected to the chassis for safety. And the center tap would define
the ground relative to +15V and -15V. But if that's also connected to
the chassis, would that be about 15 volts above the neutral line and act
like a short circuit?
And for my next question, if I don't have an appropriate transformer
with a center tap, is it equivalent to connect two transformers in
series with the connection between the secondaries acting as a center tap?
I appreciate any illumination.