[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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