This circuit is from Radio Electronics from March 1985. The circuit uses common components at the time and LEDs as indicators. The power supply is 9V.
This circuit consists in a full-wave bridge rectifier or Graetz Bridge as its is also called. The...
This circuit multiplies the input voltage by 3 and can work with up to 12 V input. The current is a few...
Three 4011 NAND gates and two more components - a resistor and a capacitor make this oscillator very...