Voltage Monitor MC34064 (CB14536E)

The component used in this circuit is uncommon today. The circuit is from Motorola's 1990 Linear Databook.

Electronic Morse Key (CB7313E)
This circuit was found in the magazine of radio amateurs 73 in a 90's edition. The components are...
Voltage to Frequency Converter (CB13456E)
This circuit was found in a 1974 publication. It converts the applied voltage into pulses of...
Sawtooth Generator (CB22452E)
This circuit generates approximately 30 Hz signals from a 3.3 kHz clock. The circuit was found at...