This circuit is from the 1968 ARLL documentation. The MOSFET admits equivalent and the coil determines the operating frequency range being the plug type.
The model aircraft spark plug filaments operate with a low voltage of the order of 1.5 V. This...
Found in a magazine 73 for radio amateurs of the 90s, this circuit shows how to supply a photo...
We found this circuit in the same publication as the previous one (CB18947E). The circuit uses two...