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  1. M

    Long delay light flasher

    I need to build a light flasher to test brake lights in cars. The input voltage is 14V and the max current about 3A. The light needs to be powered for 30s-1min (adjustable whether by a switch or a pot doesn't matter)  and then off for 30s-1 min. Anybody have any suggestions for a simple circuit...
  2. M

    Digital Logic Problem

    I'm messing around with some logic gates trying to get a basic understanding or digital logic but for some reason I can't seem to get them to work.  The specific chip that I am using is a 7408 TTL AND gate. For some reason when I connect the power to the chip the voltage drops from 5 to 2.3. I...
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