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  2. 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.

  3. File:DPDT-symbol.svg - Wikipedia

    en.wikipedia.org/wiki/File:DPDT-symbol.svg

    The following other wikis use this file: Usage on af.wikipedia.org Skakelaar; Usage on ast.wikipedia.org Interruptor; Usage on bn.wikipedia.org ইলেকট্রনিক প্রতীক

  4. Relay - Wikipedia

    en.wikipedia.org/wiki/Relay

    Circuit symbols of relays (C denotes the common terminal in SPDT and DPDT types.) Since relays are switches, the terminology applied to switches is also applied to relays; a relay switches one or more poles, each of whose contacts can be thrown by energizing the coil. Normally open (NO) contacts connect the circuit when the relay is activated ...

  5. 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 ...

  6. 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 ...

  7. Teenager dies after bus station stabbing - AOL

    www.aol.com/teenager-dies-bus-station-stabbing...

    A murder investigation begins and parts of a town centre are cordoned off after a 17-year-old dies. Teenager dies after bus station stabbing Skip to main content

  8. H-bridge - Wikipedia

    en.wikipedia.org/wiki/H-bridge

    A "double pole double throw" (DPDT) relay can generally achieve the same electrical functionality as an H-bridge (considering the usual function of the device). However a semiconductor-based H-bridge would be preferable to the relay where a smaller physical size, high speed switching, or low driving voltage (or low driving power) is needed, or ...

  9. Government shutdown odds are rising. Economic experts aren’t ...

    www.aol.com/finance/government-shutdown-odds...

    Other stoppages have been much shorter, with economic analyses after the fact often showing that the lost money is then returned to the US economy in nearly equal measure after the government reopens.