Precision Ramp Generator (CB10042E)

We found this circuit in a documentation from the 70s. Semiconductors are from the era and can be replaced by modern equivalents.

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LED shot (CB16548E)
The idea of this circuit is to press the button in such a way that the flow of the LED in the...
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15 V x 40 mA Regulator (CB8700E)
This circuit was obtained in a documentation from the National Bureau of Standards of 1968. The...