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This variable frequency oscillator was found in an old American documentation. Transistors allow more modern equivalents and coil data are found next to the diagram for several frequency bands.
The circuit is suggested by National Semiconductor in its 1994 Linear Applications Handbook. The...
Found in a 1969 Electronics World, this circuit is intended for amplifying analog cable TV...
Found in an Electronic Design from the 90s, this circuit uses a component of the time, difficult...