Safety circuit (CB8187E)

Pressure switches are used in this circuit that quickly turns off the supply of a load if necessary. The circuit is from a 90s Popular Electronics.

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Nanosecond pulse generator (CB9076E)
This circuit was found in ancient American documentation. Diodes are general-purpose types. |...
Timed Motor Drive (CB1550E )
The circuit of the figure consists of a motor timer that can delay drives for up to 15 minutes....
15 V and 1 000 V power source (CB20182E)
This multi-purpose power supply provides voltages of +15, -15, 300 and 1 000 V and is very useful on...