3 ms·
A plain copper oxide to copper Junction makes a serviceable diode for a crystal set. Interestingly this is the main thing to watch out for with speaker wires -
by airbreather 8y ago
A plain copper oxide to copper Junction makes a serviceable diode for a crystal set.
Interestingly this is the main thing to watch out for with speaker wires - not the cable, it is the junctions that matter by far.