Jim Ruxton wrote:
>
> I'm designing a variable frequency drive, so rectifying and filtering a
> 120 volt AC wave. This results in about 160 volt's DC. When I turn it
> off I bleed the voltage off through a couple of 1/2 watt 100k ohm
> resistors. This seems to take for ever to bleed. Is my best option to
> just reduce the ohms and increase the wattage to speed this up. Any
> other simple solutions? Thanks.


Use a constant current system, it can be as simple
as one cheap transistor (here I go) 2 resistors and
2x 1n4148 diodes. This draws a constant few mA etc
from the main cap and will discharge the cap much
quicker than a simple bleed resistor.
-Roman

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