Found in the September 1982 issue of Radio Electronics magazine, this circuit triggers a relay intermittently. Triggering is done by a reed switch, but other types of sensors can be used.
Found in a Raytheon circuit manual from the 1960s, this circuit uses the CK722 and a...
With this circuit it is possible to measure RF signals with a common multimeter. Signals up to 200...
This circuit was found in a 1967 US publication. In it we have the implementation of a ring...