This circuit turns off when switch S1 is opened. The circuit is from the 1989 Radio Electronics Experimenter edition; The triac must be controlled according to the load.
This circuit was obtained in Motorola documentation from 1969. The transistors are from the time...
The receiver circuit LM567 recognizes the tone set on 555. The connection between the circuits can be made...
This is a bridge for the measurement of low value resistances and high values too. The circuit...