This circuit was found in a 1964 Electronic Design. The transistors are of the time, but can be employed as modern equivalents. The system is for car with contact breaker.
This basic 100 kHz oscillator is suitable for use in calibration. We found it in documentation from the...
Found in a 1968 EEE, this circuit accepts frequencies from 1 to 1000 Hz and control voltages from 0.1 to...
National Semiconductor suggests the circuit shown in the figure for amplifying signals from two...