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  2. Electrical ballast - Wikipedia

    en.wikipedia.org/wiki/Electrical_ballast

    Another common use of a ballast resistor in the automotive industry is adjusting the ventilation fan speed. The ballast is a fixed resistor with usually two center taps, and the fan speed selector switch is used to bypass portions of the ballast: all of them for full speed, and none for the low speed setting.

  3. Negative resistance - Wikipedia

    en.wikipedia.org/wiki/Negative_resistance

    The ballast adds positive impedance ... If is a resistor of value , within the linear range of the op amp / < < / the input impedance acts like a ...

  4. Delco ignition system - Wikipedia

    en.wikipedia.org/wiki/Delco_ignition_system

    The ballast resistor placed in series with the primary winding creates a voltage drop proportional to the current. When the points initially close, current is low so voltage drop across the resistor is low and most of the battery voltage acts across the coil.

  5. Neon lamp - Wikipedia

    en.wikipedia.org/wiki/Neon_lamp

    A General Electric NE-34 glow lamp, manufactured circa 1930. Neon was discovered in 1898 by William Ramsay and Morris Travers.The characteristic, brilliant red color that is emitted by gaseous neon when excited electrically was noted immediately; Travers later wrote, "the blaze of crimson light from the tube told its own story and was a sight to dwell upon and never forget."

  6. AC/DC receiver design - Wikipedia

    en.wikipedia.org/wiki/AC/DC_receiver_design

    If necessary, resistance (which can be a ballast tube , a power resistor or a resistive mains lead are added so that, when the mains voltage is applied across the chain, the specified heating current flows. [13] Some types of ballast resistors were built into an envelope like a tube that was easily replaceable. [14]

  7. High energy ignition - Wikipedia

    en.wikipedia.org/wiki/High_energy_ignition

    High energy ignition, also known as H.E.I., is an electronic ignition system designed by the Delco-Remy Division of General Motors.It was used on all GM vehicles, at least in the North American market, from 1975 through the mid-1980s.

  8. List of resistors - Wikipedia

    en.wikipedia.org/wiki/List_of_resistors

    A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages , bias active elements, and terminate transmission lines , among other uses.

  9. DIN 72552 - Wikipedia

    en.wikipedia.org/wiki/DIN_72552

    terminal on ballast resistor, to distributor 15 battery+ from ignition switch 16 15a from ballast resistor to coil and starter motor 16 15e battery+ from ignition switch, also when starter motor runs Preheat (Diesel engines) 15 preheat in + 17 start 19 preheat (glow) Starter; 45 starter relay 30f, 30h 45a starter 1 output 30h, 30h I 45b

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