This circuit uses a feedback integrator. We found it in Ferranti's transistor manual from 1974. Transistors are general-purpose types at the time.
We found this circuit in a 1987 Hands On Electronics. It was indicated at the time to power...
This high current regulator was found in documentation from 1977. Transistors are types of power at...
This circuit, obtained from old documentation, doubles the frequency of the pulses applied to the...