This 6-transistor circuit had excellent sensitivity using germanium transistors. The push-pull stage used two transformers, one drive and one output as we usually find at the time.
This 1967 Motorola circuit is intended for operation with signals up to 250 MHz delivering a 50 MHz...
This complex circuit with many digital components measures inductances in 6 ranges ranging from 100...
With the circuit in the figure it is possible to generate pulses whose duration is given by R1 and...