How To Use Voltmeter Light Bulb

Locate the two wires on the bottom of the bulb and touch a probe to each wire ensuring that the probes do not touch each other or more than one wire.

How to use voltmeter light bulb. Before using a voltmeter for the first time learn how to set the device correctly and test it out on a low voltage circuit such as a household battery. Insert standard test leads into your multimeter and set it to impedance testing. If you read 120 volts the light fixture is good. Using a multimeter to test a two fila. Checking for 120 vac on a light bulb socket assembly.

Test the bulb for impedance by pressing the one probe on the side of the bulb and the other probe on the bottom. Touch the voltmeter to the input wires or connections. Keep turning it until you land on the diode setting. Turn the multimeter dial to the diode setting. Touch the remaining probe from the multimeter to the side of the light bulb base along the threads.

If the bulb is in working order the multimeter will show values from fifteen to twenty. Touch one probe from the multimeter to the very bottom centre of the light bulb. Testing to see if it is good or bad. If not you could have a bad breaker bad wiring or a bad switch. A digital multimeter will read zero.

Checking a common light bulb using a multimeter on the ohm scale. Test the bulb with the multimeter. Brake and turn signal light bulb for a auto or trailer. Turn the dial on the front of your multimeter clockwise to move it away from the off position. Look for the multimeter needle to sweep across the meter face to the far right if the bulb continuity is good.

Using a multimeter with the selector switch in volts ac position. You must fix the problem to a point where you have 120 volts at the input to the fixture. If it is not labelled explicitly the diode setting may be represented by the diode circuit symbol. How to check a typical two filament light bulb with a multimeter using the ohms function. Mags how to videos how to use a multimeter for beginners in this video i will help teach you how use a multimeter to test volts ac dc amps and ohms.