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Re: [Amps] Looking for picture of SB220 interlock switch

To: <amps@contesting.com>, "Geert Jan de Groot" <pe1hzg@xs4all.nl>
Subject: Re: [Amps] Looking for picture of SB220 interlock switch
From: "Carl" <km1h@jeremy.mv.com>
Date: Wed, 6 Nov 2013 11:00:30 -0500
List-post: <amps@contesting.com">mailto:amps@contesting.com>
That "safety" device can easily destroy your PS and I always disable/remove them and add a warning label.

If you are that worried about safety then add a cover switch to disable the AC line as many other amps do. Very simple and inexpensive.

Carl
KM1H


----- Original Message ----- From: "Geert Jan de Groot" <pe1hzg@xs4all.nl>
To: <amps@contesting.com>
Sent: Wednesday, November 06, 2013 4:07 AM
Subject: [Amps] Looking for picture of SB220 interlock switch



I'm preparing to start on an SB220 renovation project:
replace capacitors, update diode board, etc

The previous owner has disbled the safely interlock by
bending the brass strip away and removing the
"tapped phenolic spacer". I'd like to restore them.

I'm not sure what, and why, the machanical and electrical
parameters are of the spacer as I'll need to find something else.
I'd expected it to be a metal thing but according to the manual
it isn't.

Does someone have a detailed picture of the interlock in place?
Why is it an isolator? What are the mechanical stresses on the spacer?

73,

Geert Jan

PS: I know the interlock doesn't make it safe, but 'safer'
and that's still a good thing IMHO


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