Electricity measurements - multimeters |
AC Current
Measurement AC Current Measurement On High Voltage Systems,
pdf file |
AC metering circuits
AC metering circuits |
AC voltage
measurement errors in digital multimeters Crest factor, RMS, True RMS, TRMS,
pdf file |
AC voltage measurement crest factor, RMS, True RMS, TRMS,
pdf file |
AC voltmeters and
ammeters AC electromechanical meter movements come in two basic arrangements: those based on DC movement designs, and those engineered
specifically for AC use. Permanent-magnet moving coil (PMMC) meter movements will not work correctly if directly connected to alternating current, because
the direction of needle movement will change with each half-cycle of the AC |
Analog meter in order to use a DC-style meter movement, such as the D'Arsonval design pictured in the applet below, the alternating current must be
"rectified" into DC |
Appareils analogiques
et numériques appareils analogiques et numériques,
pdf file |
Appareils de mesures en Français |
D'Arsonval galvanometer D'Arsonval galvanometer |
DC METERING
CIRCUITS
pdf file, scroll down |
Digitale multimeter in Dutch,
pdf file |
Digital
multimeter |
Electrical measurements electrical measurements |
Electric meters and motors |
Electric meters moving coil meters,
design of a voltmeter, ammeter or ohmmeter
|
Galvanometer the torque on a current loop in a uniform magnetic field is used to measure electrical magnetic field is used to measure electrical
currents. This current measuring device is called a moving coil galvanometer |
Galvanometer
a galvanometer is an electromechanical transducer. It produces a rotary motion,
through a limited arc, in response to electric current flowing through its coil.
The name galvanometer has been applied to devices used in measuring, recording,
and positioning equipment |
Galvanometer galvanometer |
Galvanometer
the galvanometer is an electromagnetic device capable of detecting very small
electrical currents. In this experiment, the characteristics of a galvanometer
and the basic construction of the ammeter and voltmeter will be investigated |
Galvanometer
Galvanometer as voltmeter and ammeter, ppt file |
Galvanometer as voltmeter and ammeter
Galvanometer as voltmeter and ammeter |
Galvanometers |
Galvanometers a galvanometer is an instrument for detecting small currents.
It consists essentially of a coil of fine wire mounted so that it can rotate in
the field of a permanent magnet. When current flows through the coil, the resulting magnetic force on the coil windings creates a
torque on the coil that makes it rotate until equilibrium is established between the torque on the coil
and that exerted by a restoring spring,
pdf file |
Moving coil meters moving coil meters, voltmeter, ammeter, Ohmmeter |
Multimeter
multimeters, A multimeter is used to make various electrical measurements, such
as AC and DC voltage, AC and DC current, and resistance. It is called a
multimeter because it combines the functions of a voltmeter, ammeter, and
ohmmeter. Multimeters may also have other functions, such as diode and
continuity tests |
Multimeter
measurements instruments |
Multimeters |
Multimeter
Tutorial How to tell if two points are electrically connected, How to
measure resistance - resistors, potentiometers and sensors, How to measure
voltage - battery testing, wall-wart adaptor testing, and the terror of mixed
AC/DC measurements |
Multimètre en Français |
Multimètres - Instrumentation numérique en Français,
doc file |
Multimètre
construction, en Français |
Techniques de mesures
en Français |
Techniques de mesures en Français, pdf file |
The digital multimeter
Digital Multimeter Layout, Function Switch, Function Switch - Voltage, Function
Switch - Ohms/Amps, how to do Voltage measurements, how to do Current
measurements, how to do Resistance measurements |
The digital multimeter
how to do Voltage measurements, how to do Current measurements, how to do
Resistance measurements |
Thyristor and
diode measurement with a multi-meter pdf file |
True RMS
measurements measurements with a true RMS voltmeter, crest factor,
pdf file |
Using a multimeter
an ammeter measures current, a voltmeter measures the potential
difference (voltage) between two points, and an ohmmeter measures resistance. A multimeter combines these functions |
Using a multimeter Using a multimeter, What do meters measure? Analogue
multimeters, Digital multimeters, Making measurements |
Using
a Multimeter you to using a multimeter to make measurements from circuits |
Using a Multimeter
(or you, too, can have fun with electricity) ppt file |
Using a Volt & Ohm meter
Volt & Ohm meter |
Voltage and current meters
pdf file |
Voltmeter
design |
Horizontaal |
Power and energy measurements |
Compteur d'énergie en Français |
Measurement of total power in a balanced three-phase system incorporates
what is known as the two-wattmeter method |
Measurement of three-phase power with the 2-wattmeter method Measurement of
three-phase power with the 2-wattmeter method |
Measure power in a
3-phase circuit To measure power in a 3-phase circuit with a balanced load
by one-wattmeter and two-wattmeter methods and to estimate the power from the
results,
pdf file |
Mesures de puissances
électrique en Français |
Mesures de puissances en régime sinusoïdal en Français,
doc file |
Mesures de puissances en régime triphasé équilibré en
Français,
doc file |
Power and Energy measurements |
POWER – MEASUREMENT
for balanced THREE-PHASE LOAD
pdf file |
Three phase power pdf file |
TRANSFORMER
MEASUREMENT
pdf file |
Two-wattmeter method
why the two-wattmeter method works on a three-phase, three-wire sourced load
regardless of how the load is internally connected, pdf file |
Two-wattmeter method pdf file |
Watt-hour meter maintenance and testing, Watt-hour meter operating principles and construction pdf file |
Wattmeter
the Wattmeter explained, The wattmeter is an electrodynamic instrument for measuring the
electric power or the supply rate of electrical energy of any given circuit,
Wattmeter, current coil, electrodynamic wattmeter circuit, voltage coil |
Horizontaal |
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Last updated on:
2011-02-04
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