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  2. Variable reluctance sensor - Wikipedia

    en.wikipedia.org/wiki/Variable_reluctance_sensor

    A VR sensor used as a simple proximity sensor can determine the position of a mechanical link in a piece of industrial equipment. A crankshaft position sensor (in an automobile engine) is used to provide the angular position of the crankshaft to the engine control unit. The engine control unit can then calculate engine speed (angular velocity).

  3. Proximity sensor - Wikipedia

    en.wikipedia.org/wiki/Proximity_sensor

    An infrared proximity sensor Optical proximity sensor in a 2016 Samsung smartphone.A proximity sensor is a standard feature of most smartphones, disabling the touchscreen when positioned near an ear during phone calls; more recent (late 2019-early 2020) smartphones with OLED displays may have the sensor mounted under the display.

  4. File:Transistor Simple Circuit Diagram with NPN Labels.svg

    en.wikipedia.org/wiki/File:Transistor_Simple...

    Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

  5. File:NPN BJT - Structure & circuit.svg - Wikipedia

    en.wikipedia.org/wiki/File:NPN_BJT_-_Structure_...

    English: A diagram of the structure of an NPN BJT, showing the collector-emitter voltage (V CE), base-emitter voltage (V BE) and the collector, base and emitter currents and directions (I C, I B and I E)

  6. Bipolar junction transistor - Wikipedia

    en.wikipedia.org/wiki/Bipolar_junction_transistor

    Band diagram for NPN transistor at equilibrium Band diagram for NPN transistor in active mode, showing injection of electrons from emitter to base, and their overshoot into the collector. BJTs can be thought of as two diodes (p–n junctions) sharing a common region that minority carriers can move through.

  7. Hall effect sensor - Wikipedia

    en.wikipedia.org/wiki/Hall_effect_sensor

    Hall effect current sensor with internal integrated circuit amplifier. 8 mm opening. Zero current output voltage is midway between the supply voltages that maintain a 4 to 8-volt differential. The non-zero current response is proportional to the voltage supplied and is linear to 60 amperes for this particular (25 A) device.

  8. Electronic symbol - Wikipedia

    en.wikipedia.org/wiki/Electronic_symbol

    Wire crossover symbols for circuit diagrams. The CAD symbol for insulated crossing wires is the same as the older, non-CAD symbol for non-insulated crossing wires. To avoid confusion, the wire "jump" (semi-circle) symbol for insulated wires in non-CAD schematics is recommended (as opposed to using the CAD-style symbol for no connection), so as to avoid confusion with the original, older style ...

  9. Incremental encoder - Wikipedia

    en.wikipedia.org/wiki/Incremental_encoder

    A proximity sensor is built into some mechanical systems to facilitate homing, which outputs a signal when the mechanical system is in its "home" (reference) position. In such cases, the mechanical system is homed by moving it until the encoder interface receives the sensor signal, whereupon the corresponding position value is jammed into the ...