How to increase voltage from 2v to 12v?

Discussion in 'The Projects Forum' started by syaf921, Dec 21, 2012.

  1. syaf921

    Thread Starter New Member

    Dec 21, 2012
    i have problem with my circuit which the output is 2v only to connect with a relay 12v.
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    That's too bad.. Good luck.

    Now provide more information if you want any serious answers.
  3. DickCappels


    Aug 21, 2008
    You can probably use a single transistor, a resistor, and a diode to interface a 2 volt signal to the relay, but for specific help, you need to tell us the signal levels corresponding the the relay being energized and not being energized. If possible, post a schematic of your 2 volt circuit. We also need to know either the resistance of the relay coil or the current rating of the relay coil.
  4. wmodavis

    Distinguished Member

    Oct 23, 2010
    You can add a 10 volt battery in series. Be sure to take proper consideration of the two voltages when connecting them or else you might end up with 8 volts instead of 12.
    Also see mcgyvr's reply.