Question
Which symbol in Figure G7-1 represents a tapped inductor?
Answer Options
- A) Symbol 7
- B) Symbol 11
- C) Symbol 6
- D) Symbol 1
Correct Answer: A
Explanation
An inductor is a coil of wire used to store energy in a magnetic field. In a schematic diagram, an inductor is represented by a series of coiled loops. A tapped inductor is a coil that has one or more intermediate connection points (taps) along its length, allowing the user to select different values of inductance.
Symbol 7 represents a tapped inductor. The intermediate connection line running perpendicular to the coil denotes the tap. Tapped inductors are commonly used in antenna tuners (Transmatches) and oscillators, where the desired inductance or impedance ratio can be easily changed by connecting to a different tap point.
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