Found in the 1976 Siemens transistors manual, this circuit works with AM or FM IF signals. In the diagram information is given for the coils.
This small transmitter for telegraphy (CW) or remote control operates at the frequency determined by the...
The circuit, from Motorola's 1993 Linear Interface ICs, uses an unusual operating system today....
This interesting source, obtained in a 2001 catalog, can vary the output voltage between -16 and...