Triple voltage monitor (CB21516E)

Found in older American documentation, this circuit can monitor 3 or more voltages determined by resistors. Components admit equivalents.

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Three-Phase AC Motor Control (CB12540E)
In figure we have a three-phase AC motor control for voltages up to 600 V or 1200 V depending on...
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This circuit can drive a white LED from a 3 V supply. The circuit is intended to supply White LEDs...
Timer CA3018 (CB24071E)
This application of the RCA integrated circuit released at the time was found in the August 1970...