Triggered Oscillator (CB21252E)

This trip switch circuit was found in a Popular Electronics from the 90's. The frequency basically depends on C1 and R1.

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Servomotor Kit (COM150E)
November 2016 - Mouser Electronics is selling the Terasic Servomotor kit for the control of up to...
High impedance buffer (CB9557E)
This circuit was obtained in a 90’s American documentation. The FET can be replaced by a modern...
Low-power oscillator HA7210 (CB25582E)
This oscillator, which operates from 2 V, was found in the June 1993 issue of Radio Electronics magazine....