Re: Very hot hot zenerdiode in NAD T762
- From: tonym924@xxxxxxxxx
- Date: Wed, 29 Aug 2007 20:40:45 -0700
On Aug 29, 8:41 pm, "Arfa Daily" <arfa.da...@xxxxxxxxxxxx> wrote:
Well I must say, Jamie, I am having some difficulty following those lines of
reasoning. If the nominal supply is 22v, and a 5v1 zener is glued in series
with that to the input of the 7812, that's going to leave around 17v on the
input to the reg. So why is that a problem in as much as you think that
the starting voltage should be higher than 22v?
I thought he was suggesting that the starting voltage should be ~40V,
and that's why the zener is needed (to get below 36V). Since the amp
is working with 22V as the starting voltage, this doesn't seem likely.
However, something else just occured to me. The OP was taking about
zeners in the plural - two I think. So is that two zeners, in series with
each other, and then in series with the input to the reg?
As I read it, there are two amplifiers, and the diode at location D718
is the zener in question. Or is D718 a part number?
TM
.
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