On Fri, Aug 29, 2014 at 1:05 PM, Jerry Biehler  wrote:
> It will leak. I guarantee it. If not you will have a virtual leak. Vacuum
> design is not easy, especially at this level.

Hmm, alright, I have been trying to be careful! Glad I haven't cut
into the blocking-plate yet!

> I have a couple small 3 pin feedthroughs you can have. What kind of voltage
> are you working with? Current?

I think 30V max, not sure of current but the first-application-attempt
is a photodiode in reverse-bias mode, buffered by a MOSFET. These
parts:
BPW34
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1621132_-1
2N7000
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_178669_-1

and the schematic (I'm planning on only having the 'light shield'
section in the vacuum, maybe only the photodiode, 10M, and
2N7000)(don't mind the BPW34 being mislabelled on the image):
http://imgur.com/ozKQkUj
_______________________________________________
Hosted by the MEMS and Nanotechnology Exchange, the country's leading
provider of MEMS and Nanotechnology design and fabrication services.
Visit us at http://www.mems-exchange.org

Want to advertise to this community?  See http://www.memsnet.org

To unsubscribe:
http://mail.mems-exchange.org/mailman/listinfo/mems-talk