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  2. 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 ...

  3. Relay - Wikipedia

    en.wikipedia.org/wiki/Relay

    A stepping relay is a specialized kind of multi-way latching relay designed for early automatic telephone exchanges. An earth-leakage circuit breaker includes a specialized latching relay. [clarification needed] Very early computers often stored bits in a magnetically latching relay, such as ferreed or the later remreed in the 1ESS switch.

  4. 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 ...

  5. Relay logic - Wikipedia

    en.wikipedia.org/wiki/Relay_logic

    Example Ladder Logic Diagram. 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. A ...

  6. File:Relay symbols.svg - Wikipedia

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

  7. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    voltage regulators are often "U" for IC, pots and trimmers often "R" for resistor X: Socket connector for another item not P or J, paired with the letter symbol for that item (XV for vacuum tube socket, XF for fuse holder, XA for printed circuit assembly connector, XU for integrated circuit connector, XDS for light socket, etc.) X, XTAL, Y

  8. ANSI device numbers - Wikipedia

    en.wikipedia.org/wiki/ANSI_device_numbers

    Today, microprocessor-based relays can perform many protective functions in one device. [1] When one device performs several protective functions, it is typically denoted "11" by the standard as a "Multifunction Device", but ANSI Device Numbers are still used in documentation like single-line diagrams or schematics to indicate which specific ...

  9. Ladder logic - Wikipedia

    en.wikipedia.org/wiki/Ladder_logic

    Ladder logic was originally a written method to document the design and construction of relay racks as used in manufacturing and process control. [1] Each device in the relay rack would be represented by a symbol on the ladder diagram with connections between those devices shown.

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