[TMC] Rectifier replacements

w3jn w3jn at direcway.com
Tue Dec 6 20:33:31 EST 2005


Use the solid state replacements.    Mercury vapor rectifiers are cranky and 
insolent, and WHEN (not IF) they flash over they can wreck a power tranny.

866s are perfectly despicable tubes; never had anything that used 872s but I 
would expect the same problems in.re. flashovers, having to warm them up for 
some time after they haven't been used in a while, etc.

73 John

----- Original Message ----- 
From: <telegrapher at att.net>
To: <TMC at mailman.qth.net>
Sent: Monday, December 05, 2005 11:35 PM
Subject: [TMC] Rectifier replacements


> The SBT-1K uses 872 rectifiers.  I've found some 4B32 solid state units 
> which have a note on them that they are replacements for the 872. Should i 
> or should i not use them?  I don't know how much the voltage would 
> increase but it would be Ep only.  I don't think it would hurt the 8295 
> which runs 3100V on it now with the 872's.
>
> Comments.
>
> Larry
> W0OGH
>
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