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 appears at various points in this section and on this site, with minor variations. It uses the...
This sophisticated transmitter was found in the June 1993 issue of Electronics Now magazine. The...
Found in a 90s Electronic Design, this circuit can be used as a shield in current projects. The...