This flip-flop circuit is from a September 1985 issue of Radio Electronics magazine. It generates random binary numbers.
This circuit was found in an old publication from the 1970s. Despite using germanium transistors, it can...
The frequency of this oscillator depends on the coil and capacitors C1 and C2. For 1 MHz L1 is...
Found in an Elektor from the 90s, this circuit triggers a Sonalert-type buzzer when the sensor is...