When selecting the range, ensure that the maximum for the particular range chosen is above that anticipated. to measure current) and range for the measurement to be made.
When using the analogue multimeter it is possible to follow a number of simple steps: analogue multimeters are also able to measure current easily and accurately. There are a few minor differences in way that current measurements are made, but the same basic principles are used.
It is quite easy to use an analogue meter to measure electrical current.
#HOW TO FIND MEASUREMENT PROBE ON NI MULTISIM 14.1 HOW TO#
How to measure current with an analogue multimeter Therefore resistances of meters used to measure current are normally very low. For most measurements this would be unacceptably high. For example if a meter had a resistance of one ohm, and a current of one amp was flowing, then it would develop a voltage of one volt across it. For measurements of around an amp, the resistance of a meter should be much less than an ohm. In order that the multimeter does not alter the operation of the circuit when it is used to measure current, the resistance of the meter must be as low as possible. How to measure current using a multimeter In some circuits where current may often need to be measured, terminals with a shorting link may be added to facilitate the current measurement. From this it can be seen that the circuit in which the current is flowing has to be broken and the multimeter inserted into the circuit. A typical current measurement can be made as shown below. Although this can be difficult at times, it is the best option. When using a multimeter to measure current, the only way that can be used to detect the level of current flowing is to break into the circuit so that the current passes through the meter. A simple circuit in which to measure current To change the level of current flowing in the circuit it is possible to change the resistance, and the amount of current flowing can be gauged by the brightness of the bulb. In this there is a battery, a bulb which can be used as an indicator and a resistor.
Current consists of a flow of electrons around a circuit, and it is necessary to be able to monitor the overall flow of electrons. Current measurement: basicsĬurrent measurements are made in a different way to voltage and other measurements.
These items of test equipment are widely available and at very reasonable prices. However current measurements often need to be made to find out whether a circuit is operating correctly, or to discover other facts associated with its current consumption.Ĭurrent is one of the basic electrical / electronic parameters, and therefore it is often necessary to measure the current flowing in the ciricuit to check its operation.Ĭurrent measurements can be made with a variety of test instruments, but the most widely used pieces of test equipment for making current measurements is a digital multimeter. Current measurements are easy to make, but they are done in a slightly different way to the way in which voltage and other measurements are made. It is often necessary to know how to measure current using a multimeter. Test meter basics Analogue multimeter How does an analogue multimeter work DMM digital multimeter How a DMM works DMM accuracy & resolution How to buy best digital multimeter How to use a multimeter Voltage measurement Current measurements Resistance measurements Diode & transistor test Fault finding transistor circuits How to Measure Current A multimeter provides one of the easiest ways to measure alternating and direct current (AC & DC).
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