Triggered Oscillator (CB18275E)

The circuit shown in the figure generates a rectangular signal that depends on R and C, when its input goes to the high level.

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100 kHz Calibrator (CB3923E)
This simple calibration circuit consists of a crystal oscillator that generates an accurate 100 kHz...
Inductive Transmitter (CB1381E )
This circuit produces a low frequency magnetic field used in old inductive remote controls with a...
1-Transistor Medium Wave Radio (CB19593E)
We found this circuit in a European publication from the 1970s. The transistor is made of...