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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.
This circuit adds the voltage from the secondary of a transformer to an outlet connected to the...
We found this circuit in the April 1996 issue of Electronics Now magazine. The circuit uses a...
We found this high input impedance, low output impedance amplification stage in the October 1993...