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The
LCR Meter measures the characteristics of a passive component:
capacitance, inductance, resistance, quality factor, dissipation
factor, and phase angle of a component's impedance. The
resistance, capacitance or inductance, and one selectable
third result are displayed simultaneously on a large,
low-cost LCD. The LCR Meter can display the resistive
and reactive parts of either a series or parallel equivalent
circuit, as well. With a rotary encoder and small keyboard,
the LCR Meter provides an easy user interface.
This
project features a resistance range from 100.0 mW
(0.1-mW
resolution) to 1.000 MW.
The capacitance ranges from 100.0 pF (0.1-pF resolution)
to 10.00 mF. And, the inductance range is from 10.00 µH
(10-nH resolution) to 10.00 mH. In non-exhaustive accuracy
tests, the LCR Meter recorded errors of only 0.07% at
10 nF, 0.16% at 10 kW,
and 2.4% at 100 uH. Stimulus frequency ranges from 50
Hz to 10 kHz are supported in 195 user-selectable, crystal-controlled
discrete steps. Stimulus AC amplitude is selectable from
three different values: 250 mV, 500 mV, and 1 V. The stimulus
DC bias can be set internally to 2 V or externally to
up to 50 V. A four-wire measurement interface compensates
for test setup contact resistance.
Laurent
Lamesch
Luxembourg
lla@iee.lu
Abstract
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Full entry &
software
(3.8M)
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