This static switch or electronic contactor was found in a 1968 Motorola publication. The triac depends on the current of the load it controls. The values shown are for the 120 V power grid.
This logarithmic operational amplifier was found in the September 1994 issue of Electronics Now...
Indicated as a joke or challenge this circuit shows how it is possible to control two lamps using...
Found in a Linear Technology 80s integrated circuit manual this circuit has its gain controlled from...