At 06:13 PM 8/23/01 +0100, you wrote:
>This is okay as long as the reverse voltage isn't reached. Often this isn't
>stated explicitly but is 5v for most LEDs (accourding to the tech support
>bod I e-mailed when I was going to do exactly the same thing).

Any decent LED data sheet will have the reverse voltage specification.

Usually spec'd at 5V, though I think I've seen 3.3 maybe once. Actual
LEDs (by my tests, on the new known units of very recent manufacture) in
the standard cheap colo[u]rs  (super red/green/yellow) break down at
considerably more than 5V, more like 12-30+ volts. I didn't look at
your circuit, but if you have several in series, you can multiply the
voltage rating (eg. 2 LEDs in series are good for at least 10V if the
rating is 5V).

Best regards,
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body