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Re: [Amps] DRAKE L-4 AMP - 'rewiring the ON/OFF switch"

To: Stan Gammons <buttercup11421@protonmail.com>, <amps@contesting.com>
Subject: Re: [Amps] DRAKE L-4 AMP - 'rewiring the ON/OFF switch"
From: gudguyham--- via Amps <amps@contesting.com>
Reply-to: "gudguyham@aol.com" <gudguyham@aol.com>
Date: Thu, 1 Dec 2022 03:34:12 +0000 (UTC)
List-post: <mailto:amps@contesting.com>
That is a lot easier than doing it internally!!


Sent from the all new AOL app for iOS


On Wednesday, November 30, 2022, 9:48 PM, Stan Gammons via Amps 
<amps@contesting.com> wrote:

If the idea is to take the burden off the hard to find on/off switch, my
solution was making an external on/off switch using a box with
appropriate receptacle and a double pole toggle switch. I have the kit
to repair the L-4B switch, but expect I'll never need it since I leave
the power turned on all the time and power the amp on with the external
on/off switch.

73

Stan
KM4HQE
a



On 11/30/22 20:31, gudguyham--- via Amps wrote:
> I assume you want to use a 120v relay as a contactor to take the burden off 
> the on/off switch.  There’s ALWAYS 120vac available on the same terminals the 
> blower connects to.  NEVER use chassis ground for a neutral return.  Simply 
> hook into the blower terminals for 120v AC. Shift the wires from the original 
> on/off swith over to the relay contacts in the same configuration.  The 
> CW/SSB switch is part of the on/off switch but is separate electrically.  I 
> assume you’ll keep it as is.
>
> Sent from the all new AOL app for iOS
>
>
> On Wednesday, November 30, 2022, 9:03 PM, A Lawrence Fibich 
> <lfibich@sbcglobal.net> wrote:
>
> Might be a bit hard to explain - so if you have/know this unit perhaps can 
> talk off line?  I am rewiring the ON/OFF switch so the 220VAC doesn't go 
> through the switch. Using an AC relay (output/control side) - to 
> Switch/connect the power lines previously mounted to the ON/OFF switch. Then 
> the ON/OFF switch is now used to 'turn on' the relay - power to the relay - 
> comes from the Filament circuit via the ON/OFF switch to one side of the 
> input/control on the AC relay - and the other terminal on the input of the AC 
> relay is then grounded.Something just doesn't 'feel right' in having the one 
> side 'grounded' - and asking/wondering if a problem. Another thought is ? if 
> I should use a resistor of some value to decrease the voltage in this circuit 
> going to the chassis ground? Thoughts and experience doing this on this unit 
> is appreciated.73Larry F.W6EFLFibich@sbcglobal.net
>
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