[Collins] Was broken spring now 516F2 p.s. problem

[Jim Brannigan]

I am not familiar with the article in ER, but I can't imagine why one would
replace the choke with a relay.
Removing the choke from the circuit would create a capacitive input filter
and the HV would soar.  Collins used a choke input filter to regulate the
voltage swings on SSB and CW.

There is a modification to place a relay on the input side (115/220VAC) of
the transformer.  This is to relieve the FREQ CONTROL switch on the 32S of
the high startup current and prolong the life of same.

Jim

> Hi Uwe, All:
> There is an article that was put together by WA6VVL regarding this
problem. In a past issue of ER, he describes the use of replacing the choke
with a relay to stave off the high voltage arcing on the 516F2. I suspect
that it has to do something with the "angular position" of the line voltage
during t=0 (time when switch is turned on). One could probably eliminate the
problem using those zero seeking relays. Anyone else care to chime in on
this problem? Thanks. Cal, N6KYR.
>