Switching Circuit

Discussion in 'The Projects Forum' started by electrical_ck, Jan 20, 2010.

  1. electrical_ck

    Thread Starter New Member

    Dec 7, 2009
    Ok here I go, I finished my electronics course and now I want to design something for some practice. I have a 12VDC supply, a transistor, a led, and a photo diode, I want to build a circuit that when my light is on I want my led to turn on. I've looked at numerous circuits off the net and tried them on multisim and I can't get them to work. Does anyone have a tutorial about using a transistor as a switch? Also I plan on eventually using the transistors to switch to a picaxe, so if anyone has a tip there I will be very thankful. Thanks
  2. retched

    AAC Fanatic!

    Dec 5, 2009