Search results

  1. J

    LED power

    Heres what I have: 12VDC Supply Voltage 3VDC Voltage Drop 20ma LED Current I used to think that the Total LED Voltage Drop should equal the Supply Voltage. But after doing some research I found that the Total Voltage Drop should be less than 80% of the Supply Voltage. So the correct circuit...
  2. J

    12VDC @ 100ft from source

    I need to light a cluster of leds at varying distances; 50ft, 75ft, 100ft. The cluster of leds would be atop of an antenna and at the bottom would be several switches that controls the cluster. Idealistically, I would like to have 24VDC at the bottom of the antenna and then step the power down...
  3. J

    switching 12Vdc with 3Vdc

    I have an AVR who's pin outputs 3Vdc. I would like to be able to turn on, or allow to connect, 12Vdc with this 3Vdc output. There will be two power supplies. What sort of electronic part am I looking for? Thank you
Top