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  2. Thermal cutoff - Wikipedia

    en.wikipedia.org/wiki/Thermal_cutoff

    Thermal switches on microprocessors often stop only the fetching of instructions to execute, reducing the clock rate to zero until a lower temperature is reached, while maintaining power to the cache to prevent data loss (although a second switch, with a higher triggering temperature, usually turns off even the cache and forces the computer to ...

  3. Infinite switch - Wikipedia

    en.wikipedia.org/wiki/Infinite_switch

    The infinite switch itself was described in a 1975 patent of George F. Esker Jr. and Otto J. Cousins of the Harper Wyman Company. This switch would reset itself as the bi-metallic strip cooled, provided a cycle of calibrated opening and closing. It also provided an indicator light that remained on as long as the knob was not in the closed position.

  4. Reed switch - Wikipedia

    en.wikipedia.org/wiki/Reed_switch

    Reed switch diagrams from Walter B. Ellwood's 1941 patent, [4] Electromagnetic switch. It illustrates a single pole, double-throw (SPDT) device. Descriptions from the patent text are as follows: Fig. 1 - device shown in nonoperated position Fig. 2 - device shown in operated position Fig. 3 - cross-section 1 - glass envelope 2 - terminal

  5. Mercury switch - Wikipedia

    en.wikipedia.org/wiki/Mercury_switch

    A Single-Pole, Single-Throw (SPST) mercury switch on millimetre graph paper, device length approximately 1.5 cm Another mercury switch design. A mercury switch is an electrical switch that opens and closes a circuit when a small amount of the liquid metal mercury connects metal electrodes to close the circuit.

  6. DIN 72552 - Wikipedia

    en.wikipedia.org/wiki/DIN_72552

    Download QR code; Print/export ... DIN 72552 is a DIN standard for labeling the electric terminals in automotive wiring. The most frequently used labels are listed in ...

  7. Radio teleswitch - Wikipedia

    en.wikipedia.org/wiki/Radio_teleswitch

    Economy 7 meter and radio teleswitch, right. A radio teleswitch is a device used in the United Kingdom primarily to allow electricity suppliers to switch large numbers of electricity meters between different tariff rates, by broadcasting an embedded signal in broadcast radio signals.

  8. Relay logic - Wikipedia

    en.wikipedia.org/wiki/Relay_logic

    The schematic diagrams for relay logic circuits are often called line diagrams, because the inputs and outputs are essentially drawn in a series of lines. A relay logic circuit is an electrical network consisting of lines, or rungs, in which each line or rung must have continuity to enable the output device.

  9. Twilight switch - Wikipedia

    en.wikipedia.org/wiki/Twilight_switch

    A twilight switch is an electronic component that allows the automatic activation of a lighting circuit when natural light drops in a given environment. Among a large number of uses, the most common is to enable automatic lighting of streets, roads, highways, roads, gardens, courtyards, etc., when sunlight drops below a certain level (e.g.: a ...