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Variac

Power sources · 0–250 V adjustable AC

Variable autotransformer · 500 VA · in 220 V · out 125 V (0–250 V) · not isolated: the output shares the neutral with the mains

Variac on the simulator's bench

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.

Typical part: Variac (variable autotransformer)

Pins

IN L
IN N
OUT L
OUT N

Ratings and limits

Rating	500 VA
Output	0–250 V from 220 V
Isolation	none

How to use it

Brings up a repaired appliance slowly to watch for faults. It is NOT isolated: use an isolation transformer for safety.

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