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  2. Test light - Wikipedia

    en.wikipedia.org/wiki/Test_light

    UK GS38-compliant test lamp, with separately-fused test prods and current-limiting resistor, suitable for use up to 1000 V. A hand-held test lamp necessarily puts the user in proximity to live circuits. Accidental contact with live wiring can result in a short circuit or electric shock. Inexpensive or home-made test lamps may not include ...

  3. Electrical outlet tester - Wikipedia

    en.wikipedia.org/wiki/Electrical_outlet_tester

    A quick supplemental screening test for these simple miswiring errors can be performed using a non-contact voltage tester (NCVT) or non-contact voltage detector. [4] If a problem is thus identified, it can be investigated further using more-advanced equipment, or the outlet in question can be de-energized and disassembled for careful scrutiny. [4]

  4. Non-contact wafer testing - Wikipedia

    en.wikipedia.org/wiki/Non-contact_wafer_testing

    the probe card may be damaged from repeated contact, or become contaminated with debris created by contact with the wafer [2] the probe will act as a circuit and affect the results of the test. For this reason, the tests performed at wafer sort cannot always be identical and as extensive as those performed at the final device test after ...

  5. Eddy-current testing - Wikipedia

    en.wikipedia.org/wiki/Eddy-current_testing

    Variations in the electrical conductivity and magnetic permeability of the test object, and the presence of defects causes a change in eddy current and a corresponding change in phase and amplitude that can be detected by measuring the impedance changes in the coil, which is a telltale sign of the presence of defects. [5]

  6. Current clamp - Wikipedia

    en.wikipedia.org/wiki/Current_clamp

    An electrical meter with integral AC current clamp is known as a clamp meter, clamp-on ammeter, tong tester, or colloquially as an amp clamp. A clamp meter measures the vector sum of the currents flowing in all the conductors passing through the probe, which depends on the phase relationship of the currents.

  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