[Amps] Soft Start

[Theo Bellamy]

silly me .... that works with a B+ supply, but probably not with a filament
xmfr. Sorry ....

Theo

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]On
Behalf Of Theo Bellamy
Sent: Friday, August 12, 2005 1:00 PM
To: amps at contesting.com
Subject: Re: [Amps] Soft Start


Why not just put the soft start relay coil across the primary. Since there
will be a big voltage drop across the step start resistors - leaving very
low voltage across the transformer primary until the filters charge - the
relay will be timed "naturally". This will also protect against an open step
start resistor since the relay won't ever fire in that case.

Theo K4MO



-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]On
Behalf Of Rich
Sent: Friday, August 12, 2005 12:21 PM
To: Amps
Subject: [Amps] Soft Start


OK guys I made the subject soft start , but that about the only thing
right this time.  The resistor should be big enough , 50ohms 100w. It
all worked one part at a time but when I hooked it all up together my 60
main power relay chatters , I am going to rewire and not run the coil
supply for the 60 amp through all the relays. I have the 120- control
voltage daisy changed the coils and I think I am getting VD. That aint
good.
 I am able to adjust the delay as required from .15 sec to 180  with the
Dayton relays so ignore my original statement about 10sec delay on HV, I
will adjust it.
 More when I know more.

            Rich , kd0zz
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