This circuit is from a 1968 Electronic Design. The components are from the era and the operating frequency is 60 MHz. No data on the coils is provided.
We found this circuit in a publication from the 1970s. It produces intermittent clicks on a...
We found this circuit in the 1994 National Semiconductor Linear Applications Handbook. The circuit is...
This circuit is from 1977 Radio Shack documentation. The circuit modulates an LED (which can be...