[sdiy] Speaking of LEDs...

[Peter Grenader]

Question for the masters:

How lame is it that I am driving an LED with 20 volts across it and a 2k
current limit?

We thinks that before too long, it will be blown to smitherens and become a
zener. I was thinking of putting a few 1N4148's in there in series with it
to lessen its load.

What I want to do is a cheap and dirty way to show the level of a smooth
random voltage, which will fluctuate between these two rails (about +8 volts
to -12).  I am currently driving this with a unity gain op amp.

to see the specific application, go here:

http://www.buzzclick-music.com/sample_hold.jpg

Any suggestions?  OK the way it is?

thanks in advance,

Peter