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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Slow scan circuit (CB7878E)
Found in a 1964 Electronic Design, this circuit is intended to serve as a time base for cardiac...
Modulated Siren (CB12728E)
A modulated (intermittent) siren, using the four gates of the 4001 integrated circuit is shown in the...
Notch filter 741 (CB19631E)
Other operational amplifiers can be used in this conventional filter that rejects only one...