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Unformatted text preview: to a DC
signal, since there is no time-varying component. Figure 3: Photograph of the Fluke 83V multimeter There are many diﬀerent kinds of multimeter in common use (digital, analogue, pushbutton or rotary switches). Figure (3) shows the Fluke model 83V meters used in this
laboratory. It is important to setup the meter correctly before use to prevent
damage to the meter or to the circuit. To measure voltage and resistance simply turn
the dial to the required position. The meter automatically chooses the range which gives the
most accurate value. Current measurement often causes the most trouble. The ideal current
meter has zero resistance, which means that if you put it directly across a power supply,
you will burn something up. You must always put the current meter in series with
the element through which the current you wish to measure is going. This means
that you have to break the circuit and insert the meter so that the current can go through
the meter as well as the circuit element of interest. Also, you need to make sure that the
‘+’ and ‘−’ terminals are connected correctly: when the meter displays a negative value, it
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This note was uploaded on 02/13/2014 for the course PHYS 2055 taught by Professor Drayethiraj during the Winter '14 term at Memorial University.
- Winter '14