[Heathkit] HEE! was SB-601 capacitor voltage ratings

[Tom NØJMY]

Okay, so much for the guessing game, hi!  Was it flight of ideas?  No, 
just lackadaisical cut and paste skills.  The last sentence (fragment) 
in the first paragraph should be deleted.

Tom


Tom NØJMY wrote:
> That's a full-wave voltage-doubler circuit, Dave.  So each one only 
> takes roughly half of the voltage.  Even so, I recommend going with 450V 
> units. if for no other reason than the .
> 
> My opinion, and that's all it is, is that many of the '610's discrete 
> components were marginal when the kit was new.  Now we have to contend 
> with the increase in household AC line voltages since then.
> 
> In our '610 rebuild kit for example , we bump up the voltage rating of 
> almost all of the capacitors, including the can-cap.  We also upgrade 
> the resistors to 500V film-type, and with higher wattage ratings, for 
> this same reason.  There are a number of original carbon-comps, 
> particularly in the focus and intensity circuits, that have a tendency 
> to cook and go way up in resistance.
> 
> 73,
> Tom NØJMY
> Hayseed Hamfest Co.  .       .
> 
> 
> Dave Cook wrote:
>> Hi guys, I'm recapping an SB-610 and am a little confused about the voltage
>> rating of C600, C601 - the 40 uf'ers in the 600V supply. There's no voltage
>> rating in the parts list, and the caps themselves show 350V, but looking at
>> the schematic the output is 600V. How can this be? I'm ordering replacements
>> from Mouser and I'm concerned about replacing them with 350 volt, or a
>> little higher, capacitors. Any suggestions for the best replacement part for
>> these?
>>
>>  
>>
>> Thanks and 73,
>>
>> -- Dave WA0TTN