This circuit is from a 1967 Triplett manual. The circuit uses components of the time, the common FET and the general-purpose bipolar transistor.
This metronome circuit was found in an American 1980s documentation. The circuit uses the 4001...
This circuit was found in Radio Electronics from July 1990. The circuit produces the sound of the...
Current sensors of the type High-Side (high side) are circuits that monitor the current drained by a...