This circuit doubles the frequency of signals from 10 to 50 MHz. We found it in a 1969 Electronic Design. The components are from the period.
This circuit includes an AD converter for interfacing with a microprocessor and can be used as a...
The coil L2 has 64 turns of wire 28 or thinner wire in a 1 cm form coreless and L1 10 turns on L2....
When the sensor connected to points A and B is activated, removing the ground from the base of Q1...