Alt-BEAM Archive

Message #09470



To: "'beam@sgiblab.sgi.com'" beam@sgiblab.sgi.com
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Sat, 22 Jan 2000 13:48:21 -0800
Subject: [alt-beam] FULL RANGE LED PUMP




Here is a Flashing LED circuit which has energy saving and range extending
features.

This circuit has some similarity to an FLED providing the same power saving
short pulses but has a greater operating range from >6.0 down to <1.2V.


FLEDPUMP Operating range 1.2V-6.0V Typical pulse duration 100ms

The oscillator shown is a standard bicore but can be any two outputs which
are 180 degree out of phase. This LED circuit is usable down to <1.2V well
below the forward voltage of the LED. When the two outputs switch state one
or the other LED pulses brightly for a short duration and remains off for
the rest of the time thereby saving (precious) power. This is ideal for
solar applications and can be used with positive or negative Nv neurons.

enjoy

wilf
<>




Attachment: fledpump.gif

Home