Found in a 90s Electronic Design, this circuit generates harmonics from a sinusoidal input signal. The components used are still common today.
This sensitive touch circuit that triggers an oscillator uses only transistors. The circuit is...
This circuit was found in a 1967 EEE. The components are from that time, but the circuit can be...
This circuit of two transistors was found in a Japanese magazine in 1967. The transistors are made...