This Motorola circuit uses only one transistor. The circuit is from 1965 documentation. The transistor must have a collector current rated at least to 12 A.
Found in the July 1968 Supertena Bulletin of a Popular Electronics, this receiver makes use of the...
This switching source was obtained in a 1976 National Semiconductor manual. For the indicated...
This configuration appears several times on this site. The circuit can generate a 100 kHz or other...