Found in an April 1977 Radio Electronics issue, this circuit uses the well-known XR2206. The C1 values for the various frequency bands are given next to the diagram.
This circuit was found in Maxim's documentation from the 90's. The frequency of the circuit is...
This circuit includes a battery charging system and an inverter for operating a fluorescent lamp....
This circuit was obtained in an English publication from 1978. It generates a ladder that goes up and...