This transformerless circuit was obtained in a 1965 publication by Ferranti. The components are from that time, with emphasis on the type of engine used.
This circuit controls a relay in a bistable way by touching the sensors type NF (CH3) and NO...
This circuit produces modulated tones in a loudspeaker. The effects can be adjusted by the...
This is a simulation of a Relaxation Oscillator using a programmable unijunction transistor (PUT). The...