Search results
Results from the WOW.Com Content Network
A lightbulb socket, lightbulb holder, light socket, lamp socket or lamp holder is a device which mechanically supports and provides electrical connections for a compatible electric lamp base. [1] Sockets allow lamps to be safely and conveniently replaced (re-lamping).
The earliest tubes, like the Deforest Spherical Audion [3] from c. 1911, used the typical light bulb Edison socket for the heater, and flying leads for the other elements. Other tubes directly used flying leads for all of their contacts, like the Cunningham AudioTron from 1915, [ 4 ] or the Deforest Oscillion . [ 5 ]
Tung-Sols' license was a B license allowing only paying a quota and percentage of production for large or small bulb manufacturing to General Electric without exports of goods. Tung-Sol Lamp Works made miniature lamps under this system with another miniature maker called Chicago Miniature Lamp Company.
The suffix after the G indicates the pin spread; the G dates to the use of Glass for the original bulbs. GU usually also indicates that the lamp provides a mechanism for physical support by the luminaire: in some cases, each pin has a short section of larger diameter at the end (sometimes described as a "peg" rather than a "pin" [2]); the socket allows the bulb to lock into place by twisting ...
Fluorescent lamps in various embodiments. Since their introduction as a commercial product in 1939, many different types of fluorescent lamp have been introduced. Systematic nomenclature identifies mass-market lamps as to overall shape, power rating, length, color, and other electrical and illuminating characteristics.
GDT120M – 9 mA Gas-filled cold-cathode DC triode, one starter and a separate glow diode acting as an optical primer, miniature 7-pin base; GR2G – + - Neon-filled digital indicator tube, 18 x 18 mm characters, side-viewing; GR2H – + - Neon-filled digital indicator tube, 20 x 20 mm characters, top-viewing
A 300 watt tubular halogen bulb operated at full power quickly reaches a temperature of about 540 °C (1,004 °F), while a 500 watt regular incandescent bulb operates at only 180 °C (356 °F) and a 75 watt regular incandescent at only 130 °C (266 °F).
The accurate prediction of the melting temperature (Tm) is one of the most important factors that governs the success of a PCR reaction. [ 3 ] NetPrimer also analyzes the thermodynamically important secondary structures such as hairpins , self and cross dimers , runs and repeats. [ 4 ]