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  2. Orders of magnitude (voltage) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(voltage)

    1–2 mV Potential created at ambient temperatures from K Type Thermocouple: Centi-10 −2 ~10–50 mV Ripple voltage in the output of a good DC power supply [9] 75 mV Nerve cell resting potential [10] Deci-10 −1: 320 mV Typical voltage reference level in consumer audio electronics (0.316 V rms) [11] ~500 mV

  3. Slotted line - Wikipedia

    en.wikipedia.org/wiki/Slotted_line

    Figure 1. Waveguide slotted line. Slotted lines are used for microwave measurements and consist of a movable probe inserted into a slot in a transmission line.They are used in conjunction with a microwave power source and usually, in keeping with their low-cost application, a low cost Schottky diode detector and VSWR meter rather than an expensive microwave power meter.

  4. Four-terminal sensing - Wikipedia

    en.wikipedia.org/wiki/Four-terminal_sensing

    Four-point measurement of resistance between voltage sense connections 2 and 3. Current is supplied via force connections 1 and 4. In electrical engineering, four-terminal sensing (4T sensing), 4-wire sensing, or 4-point probes method is an electrical impedance measuring technique that uses separate pairs of current-carrying and voltage-sensing electrodes to make more accurate measurements ...

  5. Spontaneous potential logging - Wikipedia

    en.wikipedia.org/wiki/Spontaneous_potential_logging

    The log works by measuring small electric potentials (measured in millivolts) between depths with in the borehole and a grounded electrode at the surface. Conductive bore hole fluids are necessary to create a SP response, so the SP log cannot be used in nonconductive drilling muds (e.g. oil-based mud) or air filled holes.

  6. Volt - Wikipedia

    en.wikipedia.org/wiki/Volt

    High-speed train overhead power lines: 25 kV at 50 Hz, but see the List of railway electrification systems and 25 kV at 60 Hz for exceptions. High-voltage electric power transmission lines: 110 kV and up (1.15 MV is the record; the highest active voltage is 1.10 MV [9]) Lightning: a maximum of around 150 MV. [10]

  7. Template:Latest pie chart of world power by source - Wikipedia

    en.wikipedia.org/wiki/Template:Latest_pie_chart...

    Template: Latest pie chart of world power by source. 1 language. ... Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance.

  8. Test probe - Wikipedia

    en.wikipedia.org/wiki/Test_probe

    Typical passive oscilloscope probe being used to test an integrated circuit. A test probe is a physical device used to connect electronic test equipment to a device under test (DUT). Test probes range from very simple, robust devices to complex probes that are sophisticated, expensive, and fragile.

  9. TL431 - Wikipedia

    en.wikipedia.org/wiki/TL431

    The typical initial deviation of reference voltage from the nominal 2.495 V level is measured in millivolts, the maximum worst-case deviation is measured in tens of millivolts. The circuit can control power transistors directly; combinations of the TL431 with power MOS transistors are used in high efficiency, very low dropout linear regulators.