100 V x 5 mA Voltage Regulator (CB835E)

This high voltage regulator uses only two passive components. The output is 100 V, but replacing the zener diode other voltages can be obtained.

Six Transistor Superheterodyne Receiver (CB964E)
This sensitive MW receiver was found in a publication of year 1958., The circuit uses germanium...
Remote Volume Control (CB4476E)
This circuit controls the passage of the signal from an input to an output using a DC signal from a...
Battery Low Indicator (CB4796E)
This circuit triggers the LED when the monitored battery voltage drops below 9 V for 12 V...