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  2. SPDT - Wikipedia

    en.wikipedia.org/wiki/SPDT

    SPDT may refer to: Single pole, double throw, a simple type of changeover electrical switch; Single Point Diamond Turning, a type of mechanical machining using diamond-tipped cutting elements; SCSI Pass-Through Direct, (SPTD) is a proprietary device driver and application programming interface (API)

  3. Relay - Wikipedia

    en.wikipedia.org/wiki/Relay

    A relay Electromechanical relay principle Electromechanical relay schematic showing a control coil, four pairs of normally open and one pair of normally closed contacts An automotive-style miniature relay with the dust cover taken off. A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple ...

  4. Multiway switching - Wikipedia

    en.wikipedia.org/wiki/Multiway_switching

    When the load is controlled from only two points, single pole, double throw (SPDT) switches are used. Double pole, double throw (DPDT) switches allow control from three or more locations. In alternative designs, low-voltage relay or electronic controls can be used to switch electrical loads, sometimes without the extra power wires.

  5. DIN 72552 - Wikipedia

    en.wikipedia.org/wiki/DIN_72552

    from 2nd battery and 12/24 V relay: 31 return to battery- or direct to ground 31a return to battery- 12/24 V relay 31b return to battery- or ground through switch 85d 31c return to battery- 12/24 V relay 31, 31a Electric motors; 32 return 31 33 main terminal (swap of 32 and 33 is possible) 30 33a limit 33b field 54e 33f 2. slow rpm: 33g 3. slow ...

  6. Reed switch - Wikipedia

    en.wikipedia.org/wiki/Reed_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 3 - resilient magnetic member 4 - non-magnetic member 5 - conducting member 6 - magnetic member

  7. Solid-state relay - Wikipedia

    en.wikipedia.org/wiki/Solid-state_relay

    A solid state relay (SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. They serve the same function as an electromechanical relay , but solid-state electronics contain no moving parts and have a longer operational lifetime.

  8. Dupe (product) - Wikipedia

    en.wikipedia.org/wiki/Dupe_(product)

    A dupe (duplicate) or knockoff is a product similar in appearance, functionality, or design to a higher-end, often more expensive, branded item but sold at a much lower price. Unlike counterfeit products , dupes do not copy trademarked brand names or logos and are often sold at mainstream retailers.

  9. Wikipedia:User scripts/List - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:User_scripts/List

    Scripts that change the appearance or behavior (UI/UX) of the site. Any script that does nothing other than add a link to a page to a menu, panel or toolbar belongs to § Shortcuts . Any script that makes an edit to a page (i.e. increases the user's contributions) or changes the appearance or behavior of the edit form ( action=edit/submit ...