The purpose of this circuit is only to increase the input resistance of a multimeter, since there is no voltage gain. The batteries are 9 V and operational equivalents can be used.
This circuit was found in a 1967 Ferranti documentation. It takes the transistor to the conduction...
This two-output circuit was found in General Electric documentation from the 1990s. The circuit uses...
Found in American documentation, this circuit aims to produce pulses of certain durations from smaller...