This 4-voltage power supply using zener diodes has a maximum recommended current of 25 mA. The circuit was found in the May 1966 Radio Electronics magazine.
This circuit can be used to listen for SSB signals on receivers that do not have the built-in...
This configuration was found in Raytheon's circuit manual from the 1960s. The circuit has an...
Tem The CMOS oscillator illustrated in the figure has a frequency that depends on the temperature sensor, a...