CK722 Oscillator (CB23726E)

This 2-CK722 oscillator was found in a march 1961 Radio Electronics Magazine. The circuits need 1,5 to 9 V power supply voltages.

High Power Oscillator (CB13090E)
A single high-power transistor MJ15003 is used in the circuit in the figure to generate strong...
12 V to 9 V Converter (CB15056E)
The output current of this circuit reaches 12 mA. The zener diode determines the output voltage. The...
Simple Alarm with NC Sensors (CB12345E)
This circuit can be supplied with voltages of 6 or 12 V, depending on the relay. The transistor can be...