Re: Combining dual secondaries of a toroidal transformer

On 2007-02-18, John Fields <jfields@xxxxxxxxxxxxxxxxxxxxx> wrote:

Once that's done, the primary leads should be twisted together in
pairs and those pairs connected to the mains while monitoring the
secondary voltage. If the voltage is zero the primaries are wired
out of phase and should be connected in reverse. That should cause
the secondary voltage to rise to 16V.

if you're lucky the transformer will survive the short-circuit created
if you get the primaries connected out of phase.

better to measure with a voltmeter, possbily while applying a low voltage AC
signal to the secondary or to use a current-limited supply.

Bye.
Jasen
.