Found in a 1980s American documentation, this circuit has a current consumption of only 1 mA. The crystal can be from 100 kHz up to a few megahertz.
This circuit in a receiver that allows the capture of distant stations with short waves. The...
July 2017 - Mouser Electronics already has in stock the new SCRs from the SJxx40x high temperature series from...
The combination of diodes determines which of the LEDs will light when one of the switches is...