In article ,
David Powell wrote:

In article
,
" in

Hi
Copper Oxide have the advantage for things like meters
and battery charges because they have a low forward
voltage drop. The primary problem is that it has a very low
reverse voltage. Even in charger applications, it took
a stack of many junctions to hold off the reverse voltage
of a 12volt charger.

Their downside for meter use is low bandwidth. Fine for a 50 / 60 Hz
electrician's testmeter, useless for audio. Often way off at 400 Hz.

I thought the rectifiers used in the old VU meters, as well as various
telephony applications, were Copper Oxide? If Copper Oxide doesn't work
in audio frequency applications what sort of rectifier stacks were used
in these audio applications?

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Regards,

John Byrns

Surf my web pages at, http://fmamradios.com/