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  2. 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 ...

  3. Pogo pin - Wikipedia

    en.wikipedia.org/wiki/Pogo_pin

    Variety of loose pogo pins and pogo pins in 3-pin assembly holders and with Pick and Place caps Sectional drawing of a pogo pin, showing the plunger, barrel, and spring. A pogo pin or spring-loaded pin is a type of electrical connector mechanism with spring plungers that is used in many modern electronic applications and in the electronics testing industry. [1]

  4. Electrical connector - Wikipedia

    en.wikipedia.org/wiki/Electrical_connector

    Some connectors are designed such that certain pins make contact before others when inserted, and break first on disconnection. [1] This is often used in power connectors to protect equipment, e.g. connecting safety ground first. It is also employed for digital signals, as a method to sequence connections properly in hot swapping.

  5. Current clamp - Wikipedia

    en.wikipedia.org/wiki/Current_clamp

    In electrical and electronic engineering, a current clamp, also known as current probe, is an electrical device with jaws which open to allow clamping around an electrical conductor. This allows measurement of the current in a conductor without the need to make physical contact with it, or to disconnect it for insertion through the probe.

  6. Oscilloscope - Wikipedia

    en.wikipedia.org/wiki/Oscilloscope

    To do so, the probe connectors (modified BNCs) had an extra contact to define the probe's attenuation. (A certain value of resistor, connected to ground, "encodes" the attenuation.) Because probes wear out, and because the auto-sensing circuitry is not compatible between different oscilloscope makes, auto-sensing probe scaling is not foolproof.

  7. Zero insertion force - Wikipedia

    en.wikipedia.org/wiki/Zero_insertion_force

    ZIF socket for DIP-28W package A large ZIF socket Zero insertion force connector from a Philips C5-2 ultrasound probe. A PIC microcontroller (wide SOIC-28) in a ZIF socket. Zero insertion force (ZIF) is a type of IC socket or electrical connector that requires very little (but not literally zero) force for insertion. With a ZIF socket, before ...

  8. Polarity symbols - Wikipedia

    en.wikipedia.org/wiki/Polarity_symbols

    The adapter typically supplies power to the device through a thin electrical cord which terminates in a coaxial power connector often referred to as a "barrel plug" (so-named because of its cylindrical shape). The polarity of the adapter cord and plug must match the polarity of the device, meaning that the positive contact of the plug must mate ...

  9. 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.