Re: Highest energy cap that's available in hobby volumes .. maybe a few hundred pieces
- From: "Ancient_Hacker" <grg2@xxxxxxxxxxx>
- Date: 29 Jun 2006 11:10:58 -0700
John Larkin wrote:
A big array of series/parallel electrolytics, like photoflash caps,
doesn't need equalizing resistors. Electrolytic leakage is nonlinear
enough to balance the voltages nicely. 'lytics don't fail suddenly
like film caps, they just start leaking more.
Oh, joy, a voice of reason. All the old ARRL Handbooks and many other
books specify that you should put equalizing resistors across
electrolytics and diodes too. With a little reflection you can
convince yourself pretty thoroughly that this is a poor idea.
Electrolytics and diodes are kinda like zeners- they'll self-klimit the
voltage across themselves to a value they can handle. If you add
equalizing resistors you're just forcing the undervoltage-formed
capacitors to dissipate more power.
.
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