[Heathkit] SB-610 & SB-620 Selenium Diodes

[Garey Barrell]

The resistors really aren't necessary or desired.   Today's silicon 
rectifiers are consistent enough that they don't need the 
"equalization", and what's worse, most 1 W resistors today are rated for 
500 VDC at best.  The capacitors won't hurt anything, but again be sure 
they are rated for at least the full 1000V PIV of the diodes.

73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual
<http://www.k4oah.com> 



Glen Zook wrote:

>Put two 1N4007 diodes in series with equalization
>resistors and a 0.001 mfd capacitor across each one. 
>Will work fine, have plenty of "reserve", and is very
>"cheap" to acquire.
>
>Glen, K9STH
>
>
>--- Carl Lowry <l_carlj at bellsouth.net> wrote:
>
>Looking for a source for Selenium Diodes to be used in
>redoing the SB-610 & SB-620 power supply sections.
>They are  identified as part number  57-44 Manual says
>they are:  2 ma, at 1750 PIV. Any suggestions please ?
>
>  
>