Hi I recently found an old AC voltage stabilizer for refrigerator lying around. Its probably made in the 80s. It consists of a PCB with an op amp, couple of non functional relays with burnt out contacts and a heavy transformer with multiple taps on both sides. I've attached the pictures below. A continuity check shows that it has no shorts, but I'm really confused as to finding out which is primary and which is secondary. I've also included a diagram depicting an ohm check between different taps. Someone help me with it please!!!
P.S I have a hunch that some of the taps were used to power the electromagnets in the relays, but I may be wrong. Help me out here please...
Thanks in advance...
P.S I have a hunch that some of the taps were used to power the electromagnets in the relays, but I may be wrong. Help me out here please...
Thanks in advance...
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