Re: [CAD_CAM_EDM_DRO] Re: Power supply softstarts

----- Original Message -----
From: "Joel Hagen" <jphagen2000@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, April 05, 2005 1:03 AM
Subject: [CAD_CAM_EDM_DRO] Re: Power supply softstarts


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> What I did for a similar project is use a relay, with the coil tied to the
> cap. The normally closed contact have the resistor going to the cap.
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> When the cap. charges slowly up, the coil will make and the normally open
> contacts bypass the resistor, allowing full current flow from the
> transformer to the circuit.
>
> The size of the resistor determines the length of the soft start time..
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