Amps
[Top] [All Lists]

[AMPS] SB-220 cooling -- another thought

To: <amps@contesting.com>
Subject: [AMPS] SB-220 cooling -- another thought
From: 2@vc.net (2)
Date: Wed, 10 Oct 2001 05:22:02 -0700
>
>In my SB-220, at least, the springs that clamp the socket contacts on the
>pins are very readily removable.  The design really looks as if the springs
>were designed to be changed out if and when they became overheated
>
>Assuming the spring clips on the filament pins have been annealed to the
>point that they will no longer hold tension, that raises a few possibilities:
>
>Could I swap one or both (rebent first) for the springs on a grid pin,
>which presumably have not been through such temperature extremes?
>
>Could I seek to retemper the spring clips by heating and quenching?
>
>Does anyone have a junked SB-220 or other amp with the same sockets from
>which you'd be willing to scavenge some non-filament springs?
>
>Does anyone know of a source for the clips without buying the whole socket?
>
//  Such springs can be bent up from heated austenitic steel piano wire - 
which is available in hobby shops.  No tempering is needed.  Temper 
austenitic steel and it breaks like glass.   Trimmed, large size bobby 
pins also work.   

cheers, Pete

-  R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures.  
end


--
FAQ on WWW:               http://www.contesting.com/FAQ/amps
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com


<Prev in Thread] Current Thread [Next in Thread>