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???)
Flashes LEDs to beats in music.
The concept is simple. Two FETs act as switches, and turn the LEDs ON when sufficient current flows through its base terminal.
The … Read more
Around the end of February every year there's a 'Chinese Lantern Festival' that happens in my city. Lots of junk to buy, cool lanterns, interesting food, and most … Read more
