Trading volts
for amps
Two windings share one iron loop, so both see the same changing flux. Each turn on the secondary collects the same induced volt as each turn on the primary — which is the whole device.
lawVs/Vp = Ns/Np. Energy is conserved, so if voltage goes up, current comes down by the same factor.
trySet the secondary to far more turns than the primary.
noticeVoltage climbs and current collapses in proportion; the power on both sides stays the same. Direct current gives nothing at all — no change, no flux change, no output.
in lifeGrid lines run at high voltage and low current to cut heating losses; substations trade it back down.
found byFaraday's 1831 induction ring was the first; Stanley's 1886 design made distribution grids possible.