This circuit, which can be built with several CMOS gates, was found in the March 1996 issue of Electronics Now magazine. The circuit has the base frequency determined by R1 and C1.
Found in a 1968 Ferranti documentation, this circuit can be implemented with modern equivalent...
The purpose of this circuit found in an old Elektor is to light a lower power lamp when the bigger...
This circuit is from an old American amateur radio manual. The circuit shows how to use a Varicap...