What to do with these P-JFETs

[th!nk]

So I had to order some J175's for a build, using them to alter a supply voltage based on an input signal. Whether or not the idea works, I'm not particularly likely to be using the setup that often and a lot of them are going to be out of spec even if I do. So, any suggestions what I can do with the spares? I can get a few N-JFETs (particularly J113, which is pretty similar to 2n5457 as far as I know), if that helps. I guess I could just use them as diodes but that's kind of dull.

Here's the datasheet: http://docs-asia.electrocomponents.com/webdocs/12cf/0900766b812cfdfb.pdf

[R.G.]

P-channel JFETs make great signal switches for signals sitting on 0Vdc. You stick the drain and source in line with the signal, making sure there is a resistive path to 0Vdc (ground) on both sides. With the gate left open or pulled to ground by a resistor, signal flows through freely.

If you raise the gate voltage to something over 5Vdc (for the J175/176 devices) the FET's resistance goes to nearly infinite, shutting off signal like an open switch.

It's much handier than N-channel JFET switching if you don't already have to use a positive bias voltage.

[th!nk]

P-channel JFETs make great signal switches for signals sitting on 0Vdc. You stick the drain and source in line with the signal, making sure there is a resistive path to 0Vdc (ground) on both sides. With the gate left open or pulled to ground by a resistor, signal flows through freely.

If you raise the gate voltage to something over 5Vdc (for the J175/176 devices) the FET's resistance goes to nearly infinite, shutting off signal like an open switch.

It's much handier than N-channel JFET switching if you don't already have to use a positive bias voltage.

That's brilliant, heck, it might actually be really handy for the current project. Thanks RG (and also, thanks for your website - it's been absolutely invaluable for learning this stuff).