This astable multivibrator has an active cycle of 30,000: 1. We found it in a 1970 EEE. The components used are from that time.
This small FM transmitter has a sensitive modulating stage and is therefore suitable for listening...
This circuit, suggested by General Electric, increases the sensitivity of a common multimeter to 1 M /...
It can be obtained from Mouser Electronics new tactile keys subminiature SMT KMR 6 Series C & K....