We found this circuit in a 1967 American documentation. The diodes are general-purpose and the input frequency can be between 80 and 800 Hz.
This beat frequency oscillator was found in a 1980s documentation. The original FET has a grounded...
XTAL from 4 to 20 MHz can be used in this oscillator. The XRF choke can range from 10 to 100 µH...
Found in Popular Electronics this circuit uses common components to control an incandescent lamp with...