[Johnson] Adventurer filter caps

Richard Knoppow 1oldlens1 at ix.netcom.com
Tue Mar 3 01:58:54 EST 2015



On 3/2/2015 3:59 PM, Glen Zook via Johnson wrote:
> Although it is still a good idea to have equalization resistors across the capacitors, modern capacitors have much closer tolerances than in the "goode olde dayes".  Modern capacitors come in +/- 20% or +/- 10%.
> I would use 450 volt capacitors just for the safety factor. Glen, K9STH
>
> Website: http://k9sth.net
>
     I am actually not sure why the equalization resistors were used.  
Maybe because of variations in capacitance which would cause some caps 
to have higher charging currents than others in series with them.  Its 
also possible they compensate for variations in leakage since all 
electrolytics have some leakage.

-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL



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