Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Solar panels and piezoelectric discs

  1. Feb 25, 2012 #1
    I'm making a circuit using piezoelectric discs and i wanted to attach solar panels in parallel as well in order to increase amperes of the circuit. However, when put in conjunction the piezoelectric discs seem to have no effect on the circuit, when previously they had been contributing 5 or more volts. What is happening to the piezoelectric discs, why are they not working?
  2. jcsd
  3. Feb 25, 2012 #2


    User Avatar
    Gold Member

    Perhaps you weren't tapping on the discs fast enough.


  4. Feb 26, 2012 #3


    User Avatar

    Staff: Mentor

    In general, you can't simply connect different sources in parallel and expect them to work together. The solar panels are probably a heavy load on the high-impedance piezo, shorting them out.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook