This circuit was found in Motorola's 1967 documentation. The circuit makes use of power transistors of the time. For pulse pickup an appropriate pickup coil is used.
The circuit is from Ferranti's 1974 transistor manual. Transistors are general purpose types, and...
Indicated for powering circuits with operational amplifiers, this source was found in Popular...
This circuit was found in Mullard's transistor application manual from 1960. The circuit can be...