[TMC] C708 in PS-4

LARRY D GODEK telegrapher at q.com
Wed May 25 22:38:25 EDT 2011


This cap, C708 is uspposed to be across a set of relay contacts in the PS-4 medium-low voltage power supply for the PAL-1 type linear amps.  It's the same amp as used with the SBT-1 KW rigs.  On any of the schematics i have it shows C-708 but it's not in the parts list.  No capacitor has that high a number assigned to it yet it's on the schematic.  I know it's a .1 but what value voltage.  I want to change out the one in my supply to protect the grid from burning up in the event plate voltage doesn't come on or drops off without kicking out the grid voltage relay.
 
I looked on various schematics on K4OZY's web page, again not finding a part number such  as this in any parts listing.  I even printed out a new copy of a PS-4 which is totally different than the schematic i have with my books.  Unless i pull that beast out of the rack i'll never know which version i really have.
 
Anyone have any info on the C708 cap?  
 
Larry
W0OGH
 		 	   		  


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