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 Maximum Test Frequency Bench/Handheld Display Type Power Source Dimensions Weight Height Length Maximum Operating Temperature
RS Stock No. 685-8791
Mfr. Part No.ESR70
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22000µF 40 Ω - - A23 - Handheld LCD Battery 103 x 70 x 20mm - 20mm 103mm +40°C
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10000µF 2 MΩ 10H - MN21 - Handheld LCD Battery 103 x 72 x 20mm 158g 20mm 103mm +40°C
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100mF 100 MO 9999H - - 300kHz Bench LCD Mains 258 x 113 x 381mm 3.4kg 381mm 258mm +40°C
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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
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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
RS Stock No. 117-6714
BrandRS PRO
HK$26,158.10
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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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Mfr. Part No.LCR55A
BrandAmprobe
HK$2,416.52
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2000µF 20 MΩ 200H 200 h 9V - Handheld LCD Battery 79 x 183 x 38mm 311g 38mm 79mm +50°C
RS Stock No. 697-8892
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199.99mF - - 80 h 9V - Handheld LCD Battery, Mains 41 x 87 x 184mm 320g 184mm 41mm +50°C
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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
RS Stock No. 878-2198
Mfr. Part No.BK879B
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20mF 10 MO 1000H 16 h Alkaline 10kHz Handheld LCD Battery 190 x 90 x 41mm 330g 41mm 190mm +40°C
RS Stock No. 117-6717
BrandRS PRO
HK$12,742.00
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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. 175-2541
Mfr. Part No.BK890C
HK$1,559.82
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50mF - - 70 h Alkaline - Handheld LCD Battery 41 x 90 x 190mm 350g 190mm 41mm +40°C
RS Stock No. 117-6715
BrandRS PRO
HK$19,945.00
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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. 175-2540
Mfr. Part No.BK895
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100mF 100 MO 100kH - - 1MHz Bench TFT Mains 280 x 370 x 88mm 5kg 88mm 280mm +40°C
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100mF 100 MΩ 100kH - - - Bench LCD Mains 365 x 285 x 75mm 4kg 75mm 365mm +40°C
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Mfr. Part No.BK880
HK$4,159.51
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20mF 10 MΩ 1kH 6 h Alkaline 100kHz Handheld LCD Battery 41 x 90 x 190mm 348g 190mm 41mm +40°C
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199,99mF - - 70 h Alkaline - Handheld LCD Battery 41 x 90 x 190mm 350g 190mm 41mm +40°C
RS Stock No. 127-1093
Mfr. Part No.026
BrandRed Pitaya
HK$3,566.33
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100mF 10 MΩ 1000H - - - - LCD - - - - - -
RS Stock No. 117-6718
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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