Unijunction rectangular generator (CB9248E)

Found in an Electronic Design of 1964, this circuit operates with control voltages from 0 to 12 V determining the duration of the pulses.

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AD590 or AD592 Temperature Sensor (CB25446E)
This circuit allows you to read temperatures with a common digital voltmeter. We found it in the...
Voltage Indicator (CB18187E)
This circuit for the 1.5 to 15 V scaled ranges was found in a 1982 documentation, but uses current...
4.8 MHz TTL Oscillator (CB13857E)
The integrated circuit of this 1976 configuration is the 7400 and the type crystal in televisions of the...