This circuit is intended for use with common oscilloscopes having been found in documentation on instrumentation from the 1970s. The capacitors are of the ceramic type with low parasitic inductance.
This circuit is based on documentation from the operational's own manufacturer, from the 80's. The same...
This timer activates a relay after a time interval of up to 15 minutes has elapsed, starting from...
This alarm circuit was recommended by Radio Electronics magazine in December 1974. The power...