Ramp Generator (CB21842E)

We found this circuit in Ferranti's 1974 transistor manual. Transistors are general-purpose types at the time.

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Car Theft Protection (CB16603E)
We found this circuit in a 1987 documentation. It can be used on vehicles of that time, paralyzing the...
Rectangular Oscillator (CB15419E)
The oscillator shown in the figure generates a rectangular signal with a 50% active cycle (square)...
Field Strength Meter (CB22025E)
This aperiodic circuit was found in an old English documentation. The transistor can be any JFET...