We found this circuit in a 90's EDN. The circuit is based on a control integrated that is still common in these types of applications. The circuit uses a PROM.
This circuit for the 1750 m band was published in the September 1989 Radio Electronics magazine. The...
This circuit provides reverse power polarity protection using a power MOSFET and a diode. The...
The great advantage of the circuit shown in the figure is that its frequency is controlled by a...