This circuit for generating precise reference signals was found in the April 1973 issue of Radio Electronics magazine. The circuit generates 100 kHz signals according to the crystal used.
This General Electric circuit was published in 1970. The LED is infrared and the voltage according...
This circuit was found in the October 1989 issue of Radio Electronics magazine. It drives an...
The transistor can be a modern equivalent and the transformer is the type of output found on an...