With this circuit found in an American documentation from 1969 it is possible to vary the selectivity (Q factor) of a tuned circuit. The operational is from that time.
The inverter circuit shown in the figure provides a voltage of around 110 V with a rectangular waveform...
November 2016 - NXP ARM Cortex microcontrollers for serial interfacing applications, NXP 32-bit...
May 2017 - Torex's XBP14E5UFN, an array of TVS circuit protection diodes with only 0.8 pF of...