Subwoofer Filter (CIR25262E)

This low-pass circuit was found in the December 1990 issue of Radio Electronics magazine. The circuit is part of a home theater sound system.

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Direct shield for triac (CB5185E)
This shield circuit was found in an American publication from the 80's. The triac is of low...
White Noise Generator (CB12081E)
In this circuit of a 1978 publication, the noise generated at the collector-base junction of any...
Metronome or Electronic Drum (CB10001E)
This circuit is from a year 2000 documentation. It generates pulses as fast as a battery or as...