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2. Electrical outlet tester - Wikipedia

   en.wikipedia.org/wiki/Electrical_outlet_tester

   A receptacle tester being used to check for some types of improper wiring of an outlet. For this particular tester, proper wiring is indicated by the two yellow lights. The outlet tester checks that each contact in the outlet appears to be connected to the correct wire in the building's electrical wiring. It can identify several common wiring ...

3. The Best Multimeters to Safely Test Your Electrical Systems - AOL

   www.aol.com/best-multimeters-safely-test...

   Accurately test and troubleshoot electrical voltage, current, and resistance with this must-have tool. ... such as testing wall outlets, batteries, and circuit breakers. So more precise jobs ...

4. Continuity test - Wikipedia

   en.wikipedia.org/wiki/Continuity_test

   In electronics, a continuity test is the checking of an electric circuit to see if current flows (that it is in fact a complete circuit). A continuity test is performed by placing a small voltage (wired in series with an LED or noise-producing component such as a piezoelectric speaker ) across the chosen path.

5. Test light - Wikipedia

   en.wikipedia.org/wiki/Test_light

   Neon screwdriver test light in use. Current flows through a high ohm resistor and the lamp and the distributed capacitance and resistance of the user's body. A low-cost type of test lamp contacts only one side of the circuit under test, and relies on stray capacitance and current passing through the user's body to complete the circuit. The ...

6. Breakout box - Wikipedia

   en.wikipedia.org/wiki/Breakout_box

   A breakout box serves as a troubleshooting tool to determine the wiring of an electrical connector interface on a networking device or computer. Typically, a breakout box is inserted between two electrical devices to determine which signal or power interconnects are active. Breakout boxes are handy in troubleshooting connection problems ...

7. List of electrical and electronic measuring equipment

   en.wikipedia.org/wiki/List_of_electrical_and...

   Creates constant-amplitude variable frequency sine waves to test frequency response Transistor tester: Tests transistors Tube tester: Tests vacuum tubes (triode, tetrode etc.) Wattmeter: Measures power in a circuit Vectorscope: Displays the phase of the colors in color TV Video signal generator: Generates video signal for testing purposes Voltmeter