Continuous tuning (H03J7/00, H03J9/00 take precedence; combination of continuous and discontinuous tuning other than for bandspreading H03J5/00)

Child Classifications

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• H03J 3/02 Details
• H03J 3/20 of single resonant circuit by varying inductance only or capacitance only
• H03J 3/22 of single resonant circuit by varying inductance and capacitance simultaneously
• H03J 3/24 of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning
• H03J 3/28 of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range