At 08:55 PM 2/7/2003 -0500, you 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.

I've seen a clever solution where they switched the primary of a
transformer across the DC rail after the power was switched off.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.