E-1289B Electronic Medical Equipment

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Impedance and Power Factor in LCR Circuit

Impedance:

Inalternating current circuit the ratio of potential difference across the circuit and the current flowing therein is termed as impedance and is denoted by Z. Basically impedance of an AC circuit is the resistance offered by AC circuit to the flow of alternating current through it.

In an AC circuit contains pure inductance the current through the inductance is also alternating and sinusoidal in nature having the same frequency of alternation, but lags behind applied voltage by an angle pie/ 2 (90°). The current in inductance L is obtained by dividing the voltage across it by jwL. Thus impedance of an inductance is jwL.

Specifications:

Power Supply: 0 - 10, 20, 30, 40, 50 V AC regulated

In steps as a oscillator 50 Hz

Milliammeter: 0 to 25 mA AC rectifier type

High Impedance round 65 mm

Voltmeter: 0 - 5 V / 0 - 50 V AC rectifier type

High Impedance round 65 mm

Inductance(L): As required by circuit approx. 0 - 85 H

Capacitor(C): Electrolytic as required 2.2 uF

Resistance(R): 1000 ohms carbon or as required

Patch Cords: As per requirement 4 pairs

Connections can be done and optimum resonance or impedance of LCR circuit can be achieved to plot graph.

Optional:

Oscillator 10 Hz to 100 KHz.

Function Generator 10 Hz to 100 KHz.

Complete with Manual and Connection Wire.

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