This circuit from a 1966 General Electric manual makes use of an SCS. The time is given by the emitter capacitors of the unijunction transistor.
This two-phase regulator circuit was found in an Electronic Design from the 90's. The components used...
The frequency of the produced sound depends on the capacitor. With capacitors of known values, you can...
We found this circuit in an old documentation. The indicated solenoid is of low current type,...