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# Q meter

A Q meter is a piece of equipment used in the testing of radio frequency circuits. [1]

The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the USA.

Boonton Radio Corporation, founded in 1934, manufactured test instruments.

## Boonton, New Jersey

Boonton is a town in Morris County, New Jersey, United States.

## Electrical impedance

Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.

## ESR meter

An ESR meter is a two-terminal electronic measuring instrument designed and used primarily to measure the equivalent series resistance (ESR) of real capacitors; usually without the need to disconnect the capacitor from the circuit it is connected to.

## LC circuit

An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, is an electric circuit consisting of an inductor, represented by the letter L, and a capacitor, represented by the letter C, connected together.

## LCR meter

An LCR meter is a piece of electronic test equipment used to measure the inductance (L), capacitance (C), and resistance (R) of a component.

## Q factor

In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how under-damped an oscillator or resonator is, as well as characterizes a resonator's bandwidth relative to its center frequency.

Radio frequency (RF): any of the electromagnetic wave frequencies that lie in the range extending from around to, which include those frequencies used for communications or radar signals.

## RF and microwave filter

Radio frequency (RF) and microwave filters represent a class of electronic filter, designed to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency).

## RLC circuit

A RLC circuit is an electrical circuit consisting of a resistor (R), an inductor (L), and a capacitor (C), connected in series or in parallel.

## References

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