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2. List of vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_tubes

   Philips vacuum devices: A; ... 75B1 – Voltage reference tube, ... RA0007B – Directly heated saturated-emission ballast diode.

3. Fluorescent-lamp formats - Wikipedia

   en.wikipedia.org/wiki/Fluorescent-lamp_formats

   Ballast-swap replacement for 3 ft T12 30 W T8: 1.0, 25: 4: 32 F32T8: Ballast-swap replacement for 4 ft T12 40 W T8: 1.0, 25: 8: 59 F96T8: Ballast-swap replacement for 8 ft T12 75 W single-pin T12: 1.5, 38: 4 "25" F40UTSL Retrofit replacement for 4 ft T12 40 W on underpowered residential-grade rapid start magnetic ballasts. These are F40CW lamps ...

4. List of automotive light bulb types - Wikipedia

   en.wikipedia.org/wiki/List_of_automotive_light...

   Ballast output voltage D6S P32d-1 42 V: 25 W D7S PK32d-1 42 V: 25 W D8S PK32d-1 42 V: 25 W Germany. There is a German national regulation for vehicle bulbs, now ...

5. Electrical ballast - Wikipedia

   en.wikipedia.org/wiki/Electrical_ballast

   For a lighting ballast, the ANSI ballast factor is used in North America to compare the light output (in lumens) of a lamp operated on a ballast compared to the lamp operating on an ANSI reference ballast. Reference ballast operates the lamp at its ANSI specified nominal power rating. [9] [10] The ballast factor of practical ballasts must be ...

6. 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 ...

7. Fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Fluorescent_lamp

   This type of ballast is common in 220–240V countries (And in North America, up to 30W lamps). Ballasts are rated for the size of lamp and power frequency. In North America, the AC voltage is insufficient to start long fluorescent lamps, so the ballast is often a step-up autotransformer with substantial leakage inductance (to limit current flow).

8. Gas-filled tube - Wikipedia

   en.wikipedia.org/wiki/Gas-filled_tube

   A compact fluorescent bulb is a household application of a gas-filled tube. A gas-filled tube, also commonly known as a discharge tube or formerly as a Plücker tube, is an arrangement of electrodes in a gas within an insulating, temperature-resistant envelope.

9. Phase-out of incandescent light bulbs - Wikipedia

   en.wikipedia.org/wiki/Phase-out_of_incandescent...

   The color temperature of incandescent bulbs – essentially the actual temperature of the hot filament – decreases as the voltage applied is reduced by a dimmer, and the light becomes visibly "warmer"; this does not happen with other technologies. However, Philips has designed LED bulbs that mimic this phenomenon when dimmed. [169]