[R-390] R390A micro-switch saver circuit

[Jim M.]

I hve found that a simple .01 ufd 1 KV disc cap put across the switch 
reduces arcing a lot and can extend the life of any AC switch.



----- Original Message ----- 
From: "Perry Sandeen" <sandeenpa at yahoo.com>
To: <r-390 at mailman.qth.net>
Sent: Saturday, March 04, 2006 10:43 PM
Subject: [R-390] R390A micro-switch saver circuit


> Hi Gang,
>
> I've come across another circuit that may be useful to R390A's in 
> particular and BA receivers in
> general.
>
> When we used the A's in Turkey they were usually on 24/7.  Now days it's a 
> completely different
> story for most of us.
>
> It is a gated triac power on circuit from the 2/06 issue of Audio Express 
> magazine.  It will
> greatly reduce the current through the micro-switch which is getting 
> scarcer by the day although
> Hank Arney still has some NOS.  Reply off list and I'll send you a pdf 
> file.  Regards, Perrier
>
>
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