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12 volt photo cell?

Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=102330
Printed Date: May 15, 2025 at 12:41 AM


Topic: 12 volt photo cell?

Posted By: brianh
Subject: 12 volt photo cell?
Date Posted: February 18, 2008 at 9:08 PM

I am trying to find a photo cell that will work with 12 volts. I know that they make them because most of the vehicles with auto headlights have one one the dash or somewhere to turn on the headlights. If anyone has run across them on the net or anywhere I would like to know where you saw them. Thanks in advance.   Brian



Replies:

Posted By: KPierson
Date Posted: February 19, 2008 at 9:08 AM
You can get photoresistors at Radioshack.  Use the photoresistor inline with another reisotor to form a voltage divider and feed an op amp with it.  Put a pot on the other op amp input to set your switch threshold and you'll have a fully working photocell.

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Kevin Pierson



Posted By: ShaunD912
Date Posted: February 24, 2008 at 5:10 PM
The photocell in my Trailblazer only has 5v running through it.



Posted By: john ortega
Date Posted: February 24, 2008 at 10:05 PM
hey whats up iam john iam new here you might check out this company called velleman they have a ton of stuff  www.vellemanusa.com you might want to contact viper i use to have a old 900 a while back and it had a cell.late.

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john ortega


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