"normally closed switch" semiconductor question

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At 11:32 AM -0500 06/12/98, Tim Godfrey wrote:
>
>A JFET has the advantage of not requiring a power supply connection. It is
>a simple 3 pin device, not a DIP IC package. However, it works best in
>specific circuit configurations.
>
>The circuit you need to use with a FET depends on whether your "normally
>closed switch" has one side connected to ground or a power supply. If it is
>in the middle of a circuit (both terminals of the switching element at an
>arbitrary voltage with respect to the control voltage), then it gets more
>complicated, and you'd be better off with the CD4066 solutions that have
>been offered.

Great information!!  Eventually I'll get around to reading the FET chapter
in Horowitz & Hill.   Thanx for all the diagrams, I'll keep them on hand in
case someone else asks a similar question.

PEACE OUT :)
MARK