This circuit indicates the logical level of a CMOS circuit, extracting the power from the circuit being analyzed. The circuit is from an American magazine from the 90s.
Originally this piezoelectric microphone preamp was designed to be built-in, but given the use of a...
This is the traditional configuration of Baxandall bass and treble control, using passive...
We found this circuit in an American publication from the 1990s. The triac must be equipped with a heat...