N_Cook wrote in message
...
RoHS date of introduction for Australia ?
Anyway 1/4 inch i/p socket too weak even for domestic use , breaking up in
a
few years ( within RoHS regime), no obvious datecodes except main electros
seem to be 2000, otherwise maybe 2004 or 2005 IC dates. No-name flimsey
junk
, the type with 2 insulated change over contacts. On trying to work out
the
functions, apart from the tip contact/grounding setup there is a line to
one
of the isolated switches that grounds at plug inserted and o/c when
removed
, it goes DC connected to the base of a pnp transitor - function ?



If it kills the gain for bang-less plug insertion then it would only work
for insertion , not removal, as that switch makes before tip makes/breaks
ground