2 wire foto cell question

[Chris Smith]

A simple cap usually takes care of the Hysteresis in the feed line. [Flickering] <p>But as I described, make sure no other light is causing the flickering. <p>I used to hit lots of light sensors with my laser and spinning pie wheel. <p>Drove em nuts. <p>Any light [60hz] bulb can also do this if its close.

[yesiamwds]

I like one of the original ideas, use a relay. The coil has a threshold on/off voltage that might serve the purpose.<p>WS<p>[ July 24, 2005: Message edited by: yesiam ]</p>

[Michael J]

The Universal Relay As described in Nuts & Volts
Magazine, April 2005, P: 50. can do the job,
just ad a resistor between Pin 1 and 3 on the
LM358 for extra hystersis if needed.(try 1M Ohm)
Holes are provided onboard.<p>Just a thought.