Page 38 - Testing Electronic Components
P. 38
Using Analogue Meter to Test Resistor
First you must know the resistor value before you take any measurement.
With the resistor colour band calculation you have read from the previous
section, Im sure you have no problem in identifying resistor value by
looking at the colour bands. Assuming you are measuring a resistor with
the colours of yellow, purple, black and gold, from calculation it is a 47
Ohms resistor with 5 % tolerance.
Now set your analogue meter to X1 Ohm, shorting the probes and
calibrate the pointer so that it will stay at zero Ohm. Place your meter
probes to the two points of the resistor as shown in the photo. It doesnt
matter which probes to which two points because resistor does not have
polarity (positive and negative) like a battery. You should get somewhere
near 47 ohm by observing the pointer.
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