Driver for Electric Typewriter (CB6561E)

This circuit was found in a Philips documentation from 1966. Its purpose is to drive the solenoid of an electric typewriter of the time.

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Hand Dryer (CB18786E)
With this circuit it is possible to use a common hair dryer as a hand dryer. The circuit is timed...
1kW x 10 kHz sinusoidal converter (CB20999E)
This circuit was obtained from an American documentation from the 90's. Inductors are critical...
Multiplexed mixer (CB20762E)
This configuration from the 1970s can be applied to modern equivalent operational amplifiers. The...