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2. Electrical ballast - Wikipedia

   en.wikipedia.org/wiki/Electrical_ballast

   [1] [3] To prevent this, fluorescent tubes are connected to the power line through a ballast. The ballast adds positive impedance (AC resistance) to the circuit to counteract the negative resistance of the tube, limiting the current. [1] Several American magnetic ballasts for fluorescent lamps. The top is a rapid start series autoregulator ...

3. Fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Fluorescent_lamp

   Fluorescent lamp with an electronic ballast Electronic ballast for fluorescent lamp, 2×58 W Electronic ballast basic schematic Electronic ballasts and different compact fluorescent lamps Electronic ballasts employ transistors to change the supply frequency into high- frequency AC while regulating the current flow in the lamp.

4. File:Fluorescent-lamp-electronic-ballast.webm - Wikipedia

   en.wikipedia.org/wiki/File:Fluorescent-lamp...

   English: Turning on and turning off a fluorescent lamp (58 Watt T8 tube) that has an electronic ballast. The lamp starts in about 0.6 seconds without flickering. The ballast pre-heats the electrodes of the lamp in order to prolong lamp life. The lamp can be turned on and off frequently without affecting its lifespan significantly.

5. Compact fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Compact_fluorescent_lamp

   The adapter consists of a regular bulb screw, the ballast itself and a clip for the lamp's connector. Non-integrated bi-pin double-turn CFL with G24d plug-in base An electronic ballast and permanently attached tube in an integrated CFL. CFLs have two main components: a magnetic or electronic ballast and a gas-filled tube (also called bulb or ...

6. File:Fluorescent Light.svg - Wikipedia

   en.wikipedia.org/wiki/File:Fluorescent_Light.svg

   Image:Fluorescente.png, Image:TLBuis.PNG, Image:Fluorescent lamp classic power circuit.jpg SVG Version of the Classic power circuit for a fluorescent light lamp A: Fluorescent Tube B: Power (+220 Volts) C: Starter D: Switch (Bi-metallic thermostat) E: Capacitor F: Filaments G: Ballast

7. Negative resistance - Wikipedia

   en.wikipedia.org/wiki/Negative_resistance

   The ballast adds positive impedance (AC resistance) to the circuit to counteract the negative resistance of the tube, limiting the current. [ 1 ] In electronics , negative resistance ( NR ) is a property of some electrical circuits and devices in which an increase in voltage across the device's terminals results in a decrease in electric ...