AC level shifter

Discussion in 'The Projects Forum' started by isne14a69, Jul 27, 2010.

  1. isne14a69

    Thread Starter New Member

    Jul 27, 2010
    Hi everyone,

    What is the simplest way to create an AC voltage level shifter which will shift a 0-10V P-P signal down to +/-5V P-P? The frequencies I'm working with are from about 100Hz to 3KHz.

    I would like to avoid using a negative supply if possible, but will if it is necessary.
  2. tom66

    Senior Member

    May 9, 2009
    Use a capacitor. The capacitor removes the DC offset and produces an AC output. Adjust the capacitor to get the required frequency response. I recommend 100nF to start off with. The capacitor must be rated for at least the Vp-p, I think.

    It's important to note that the capacitor will attenuate the signal slightly.

    EDIT: Added image.
  3. isne14a69

    Thread Starter New Member

    Jul 27, 2010
    Thanks Tom. I will give this a try first thing in the morning.
  4. Ron H

    AAC Fanatic!

    Apr 14, 2005
    Just be aware that it only works for waveforms with 50% duty cycle, like sine waves and square waves.