Electricity is due to the flow of electrical charge through a networks of wires, and it has aided the creation of a technological society. All electrical devices are based on fundamental components such as resistors and capacitors. The testing of such components can be carried out with a portable device such as a Fluke 77 III multimeter. This is capable of measuring quantities such as voltage, current, and resistance. The measurement can be easily read with some basic knowledge of electrical units.
- Skill level:
- Moderately Easy
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Plug the probes into the digital multimeter. There is a red probe and a black probe provided with the unti. Plug the red probe into the positive terminal and the black probe into the negative terminal.
Using the dial on the front of the device, select the measurement needed. There are options for AC voltage, DC voltage, resistance, current, and continuity.
Place the corresponding probes on the positive and negative terminals of the device that needs to be tested. The display will change from "0.00" to a number. For AC/DC voltage functions, the number represents the number of Volts. A resistance measurement will be displayed in units of Ohms, unless it is very large in which case the LCD will show a "k" next to the Ohm symbol. This means it is measuring in Kilo-Ohms, or thousands of Ohms. The current function displays in Amps. The continuity function make sound an audible beep if there is electrical continuity across the device.
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