Found in an Electronic Design from 1968 this circuit generates a linear sawtooth signal modulated by an input signal. The transistors are from the era.
This source is indicated for the power of the digital multimeter of the CIR12007, but it can be...
Found in a 1966 General Electric manual, this circuit provides a delay in starting. The motor is...
Found in old documentation, this circuit uses special discharge lamps (neon) of the time. The...