>From: Spehro Pefhany <speff@INTERLOG.COM>
>>I have a circuit, that uses a voltage divider on a control pin, to turn it
>>on and off.  Basically if the voltage is present, and above a 1.32V
>>threshold, then the controller is activated.  I want to remotly control
>>this
>>device, so I tied a N channel FET (BSS138) where the source is tied to the
>>control pin, and the drain is tied to ground, and the gate has a 1K
>>pulldown
>>and then driven from a PIC.
>
>I think you've got drain and source reversed. The MOSFET will actually
>sort-of work in reverse, but the body diode is conducting and keeping
>the source voltage from going more than one diode drop above ground.

Also, Spehro, I think I would have used a bigger pulldown, no?

Colin

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