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bwilly
Sep 4, 2011, 11:44 AM
Would someone be able to provide a schematic of a circuit with a photocell for a dawn to dusk switch. The input and output will be 12 vDC. I have found circuits that reduce the output for an LED but I need the same voltage for the output.
Thank you

cdad
Sep 4, 2011, 02:24 PM
Here is one on thi page:

Ref:
Photocell Sensor: Basic 12 Volt Light Sensor Detector Switch Circuit (http://circuitelectronic.net/photocell-sensor/)

bwilly
Sep 4, 2011, 06:23 PM
Califdadof3:
Thank you for the link that was what I was looking for. Just one additional question what is IC1? I know it is an integrated circuit/transistor but what size should it be? The schematic calls it a voltage comparator. Thank you again for your assistance.
bwilly

cdad
Sep 4, 2011, 07:14 PM
Its something like this. The diagram is a basic circuit. This shows the outputs.

Voltage Comparators (http://home.cogeco.ca/~rpaisley4/Comparators.html)