LCR Meters

LCR Meters are a type of electronic test equipment used to measure the inductance (L), capacitance (C) and resistance (R) of an electronic component.

When there is a change in the current flowing through a conductor, a corresponding change is induced in the voltage in it and in conductors surrounding it. This property is known as inductance. The ability of a body or a conductor to store electrical charge is known as capacitance. The opposition that a conductor offers to the passage of electric current through it is called resistance.

Most LCR meters use AC signals to measure the impedance of components. When using an LCR meter make sure you are using the correct settings as the wrong settings can result in poor measurement accuracy. Both analogue and digital LCR meters are available. The analogue are less expensive and the digital variety are seen to be more accurate.

Uses of an LCR Meter

A digital LCR meter is used to measure the impedance flowing through a Device Under Test (DUT). It measures the voltage (V) across it, the current (I) flowing through it, and the phase angle between current and voltage. Subsequently, you can determine all the impedance parameters from these three factors.

Thus, an LCR meter measures the following parameters related to a circuit:

● inductance
● capacitance
● resistance
● dissipation factor
● quality factor
● current
● voltage
● phase angle between the current and voltage
● conductance
● susceptance

Types of LCR Meters

Handheld LCR meters: Small, lightweight and portable. They have multiple test frequency and the data it captures can be transferred to a PC via a USB port. Typically used in field operations.

Benchtop LCR meters: Big and bulky. They can be operated on programmable frequencies and can be controlled via a computer.

Techniques used with LCR Meters

Bridge Method: This method is used for measuring frequencies below 100 kHz.

LCR Measurement by Current-Voltage Technique: Using this method the LCR measurement of a component is done by measuring the current and voltage. Then the impedance values are found out from these two quantities.

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Description Price Maximum Capacitance Measurement Maximum Resistance Measurement Maximum Inductance Measurement Battery Life Battery Type Bench/Handheld Display Type Power Source Dimensions Weight Height Length Maximum Operating Temperature Minimum Operating Temperature
RS Stock No. 685-8791
Mfr. Part No.ESR70
MYR725.25
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22000µF 40 Ω - - A23 Handheld LCD Battery 103 x 70 x 20mm - 20mm 103mm +40°C +10°C
RS Stock No. 412-046
Mfr. Part No.LCR55A
BrandAmprobe
MYR1,379.51
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2000µF 20 MΩ 200H 200 h 9V Handheld LCD Battery 79 x 183 x 38mm 311g 38mm 79mm +50°C 0°C
RS Stock No. 738-9482
Mfr. Part No.U1732C
MYR1,870.78
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20mF 200 MΩ 2000H 16 h 9V Handheld LCD Battery, Mains 41 x 87 x 184mm 337g 184mm 41mm +55°C -10°C
RS Stock No. 711-0038
Mfr. Part No.LCR40m
MYR511.37
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10000µF 2 MΩ 10H - MN21 Handheld LCD Battery 103 x 72 x 20mm 158g 20mm 103mm +40°C +10°C
RS Stock No. 697-8892
Mfr. Part No.U1701B
MYR844.87
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199.99mF - - 80 h 9V Handheld LCD Battery, Mains 41 x 87 x 184mm 320g 184mm 41mm +50°C 0°C
RS Stock No. 738-9486
Mfr. Part No.U1733C
MYR2,902.04
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20mF 200 MΩ 2000H 16 h 9V Handheld LCD Battery, Mains 41 x 87 x 184mm 337g 184mm 41mm +55°C -10°C
RS Stock No. 117-6717
BrandRS PRO
MYR6,380.86
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9999.99mF 99.9999 MΩ 9999.99H - - Bench LCD Mains 265 x 312 x 107mm 3kg 107mm 265mm - -
RS Stock No. 123-8770
BrandRS PRO
MYR450.15
Each
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20000µF - - 100 (Carbon Zinc) h, 200 (Alkaline) h 9V Handheld LCD Battery 87 x 39 x 185mm 290g 185mm 87mm +50°C 0°C
RS Stock No. 738-9489
Mfr. Part No.U1731C
MYR1,548.92
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20mF 200 MΩ 2000H 16 h 9V Handheld LCD Battery, Mains 41 x 87 x 184mm 337g 184mm 41mm +55°C -10°C
RS Stock No. 123-3254
BrandRS PRO
MYR1,733.60
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20mF 200 MΩ 20kH 50 h Alkaline Handheld Auto Backlit Bar Graph Display Battery 95 x 51.2 x 200mm 605g 200mm 95mm +50°C 0°C
RS Stock No. 123-3255
BrandRS PRO
MYR1,072.37
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20mF 200 MΩ 20kH 50 h Alkaline Handheld Auto Backlit Bar Graph Display Battery 95 x 51.2 x 200mm 605g 200mm 95mm +50°C 0°C
RS Stock No. 117-6718
BrandRS PRO
MYR4,764.42
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9999.99mF 99.9999 MΩ 9999.99H - - Bench LCD Mains 265 x 312 x 107mm 3kg 107mm 265mm - -
RS Stock No. 878-2189
Mfr. Part No.BK878B
MYR1,378.46
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20mF 10 MΩ 1000H 16 h Alkaline Handheld LCD Battery 190 x 90 x 41mm 330g 41mm 190mm +40°C 0°C
RS Stock No. 878-2198
Mfr. Part No.BK879B
MYR1,654.15
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20mF 10 MΩ 1000H 16 h Alkaline Handheld LCD Battery 190 x 90 x 41mm 330g 41mm 190mm +40°C 0°C
RS Stock No. 117-6714
BrandRS PRO
MYR13,096.60
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9999.99mF 99.9999 MΩ 9999.99H - - Bench LCD Mains 265 x 312 x 107mm 3kg 107mm 265mm - -
RS Stock No. 388-7349
Mfr. Part No.LCR400
BrandAim-TTi
MYR5,204.55
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99000µF 990 MΩ 9900H - - Bench LED Mains 360 x 240 x 95mm 2.9kg 95mm 360mm +40°C -5°C
RS Stock No. 121-7581
Mfr. Part No.BK891
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9999F 9.999 GΩ 9999H - - Bench LCD Mains 258 x 113 x 381mm 3.4kg 381mm 258mm +40°C 0°C
RS Stock No. 175-2540
Mfr. Part No.BK895
MYR30,601.85
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- - - - - Bench TFT Mains 280 x 370 x 88 (Without Bezel) mm, 369 x 408 x 108 (With Bezel) mm 5kg 88 mm, 108 mm 280 mm, 369 mm +40°C 0°C
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BrandRS PRO
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9999.99mF 99.9999 MΩ 9999.99H - - Bench LCD Mains 265 x 312 x 107mm 3kg 107mm 265mm - -
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