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  2. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    IEEE 200-1975 or "Standard Reference Designations for Electrical and Electronics Parts and Equipments" is a standard that was used to define referencing naming systems for collections of electronic equipment. IEEE 200 was ratified in 1975. The IEEE renewed the standard in the 1990s, but withdrew it from active support shortly thereafter.

  3. Electronic symbol - Wikipedia

    en.wikipedia.org/wiki/Electronic_symbol

    An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may vary from country to country, or engineering ...

  4. Circuit diagram - Wikipedia

    en.wikipedia.org/wiki/Circuit_diagram

    A less common symbol is simply a series of peaks on one side of the line representing the conductor, rather than back-and-forth. 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 ...

  5. File:Buzzer-IEC-Symbol.svg - Wikipedia

    en.wikipedia.org/wiki/File:Buzzer-IEC-Symbol.svg

    The following other wikis use this file: Usage on ar.wikipedia.org طنان كهربائي; Usage on bn.wikipedia.org ইলেকট্রনিক প্রতীক

  6. Sentinel outlet - Wikipedia

    en.wikipedia.org/wiki/Sentinel_outlet

    A sentinel outlet in occupational safety and health is a water outlet that is chosen to have its temperature monitored so that risk from Legionella can be controlled. This is typically chosen to be the closest and furthest outlets from the water tank .

  7. File:SPST-NO relay symbol.svg - Wikipedia

    en.wikipedia.org/wiki/File:SPST-NO_relay_symbol.svg

    File:Electrical_symbols_library.svg licensed with PD-self 2008-12-13T12:47:36Z Rainglasz 1276x850 (253011 Bytes) Addet tube symbol, variable capacitor and resistor (europ. style) 2008-08-13T08:59:15Z WvBraun 1276x850 (244692 Bytes) Grouped some symbols in ICs, description and sources areas.

  8. Fire alarm notification appliance - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_notification...

    The system can be stand alone (i.e. using dedicated loudspeakers, which can also feature integrated strobe lights), or the system can accommodate public address system functionality. In 1973, the Autocall fire alarm company (merged to SimplexGrinnell then relaunched), manufactured the first voice evacuation system. [6]

  9. Pilot light - Wikipedia

    en.wikipedia.org/wiki/Pilot_light

    In natural gas furnaces, water heaters, and room heating systems, a safety cut-off switch is normally included so that the gas supply to the pilot and heating system is shut off by an electrically operated valve if the pilot light goes out. This cut-off switch usually detects the pilot light in one of several ways: A flame rectification device. [2]