Take a look at the QPROX devices - Digikey sells them. I don't know if they
will work at the voltage levels you are using.

http://81.2.82.89/products/touch.php

Larry

At 08:30 PM 3/26/2003 -0500, you wrote:
>Hi all. I'm planning on embedding a rechargable battery (actually a Sony
>gumpack style NiMH cell) into a small transmitter. I will build in a
>charging circuit based on the Maxim MAX712 charger controller.
>
>My problem is this: I need to be able to toggle power on and off through
>a waterproof membrane. It's a bit flexible, but not enough to allow a
>standard push on-off type switch. I was thinking about using a small
>tactile momentary switch and an SCR, but I don't think I can get that to
>work. The problem is getting a normally closed tactile to act as the
>"off" switch. This is a one off, of course.
>
>So here are my specs. I need a power switch/controller type of circuit
>that can be turned on and off using small normally open tactile switch,
>or two switches, that would be fine too. Size, power consumption, and
>ease of construction would also be factors. I would prefer to not have
>to order some esotheric switch from elsewhere.
>
>Any ideas?
>
>Thanks,
>
>Josh
>--
>A common mistake that people make when trying to design something
>completely foolproof is to underestimate the ingenuity of complete
>fools.
>         -Douglas Adams
>
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Larry Bradley
Orleans (Ottawa), Ontario, CANADA

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