This 1969 Electronics World power supply has 5 V to power digital circuits and a 170 V output for Numitron indicator valves used at the time.
This crystal-controlled oscillator can generate signals up to a few dozen megahertz. We found it...
This charger sources currents in three ranges: 10 mA, 25 mA and 50 mA; Current is sellected...
This simple standing waveform (ROE or SWR) meter is used to adjust antenna matching with...