Charge Capacitor with Solar Panel
December 26, 2010
Is anyone aware of a simple circuit that will charge a capacitor with a solar panel (Small one from calculator) and then discharge to an LED via a transistor when the capacitor get's fully charged? The point is to make the LED flash. The frequency of the flashes would depend on ambient light conditions (less light, longer charge time). The closest thing I found is the circuit bellow. Would replacing the +12V with a solar panel still make it work (just take longer to charge)? Also what is the N.C. symbol at the transistors base ?(No Circuit or Normally Closed???)
I am aware of circuits that use a solar panel to charge a battery and use the batteries to make a flashing LED but I am trying to avoid the extra componenets. Thanks guys.