Mass-spring system exhibiting periodic motion.

Generates frequency for signal mixing.

Measure of transition probability strength.

Precision frequency-generating electronic component.

Pulse generator using transformer feedback.

Circuit generating non-sinusoidal periodic signals.

An electronic oscillator circuit in which the oscillation frequency is determined by a tuned circuit consisting of capacitors and inductors.

A Colpitts oscillator, invented in 1918 by Canadian-American engineer Edwin H. Colpitts using vacuum tubes, is one of a number of designs for LC oscillators, electronic oscillators that use a combination of inductors and capacitors to produce an oscillation at a certain frequency.

A device composed of an odd number of NOT gates whose output oscillates between two voltage levels, representing true and false. The NOT gates, or inverters, are attached in a chain; the output of the last inverter is fed back into the first.