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EL151 – Power pentode, Y10A steel tube 10-pin base; EL152 – 40 W AF/SW/VHF Radiation-cooled power pentode. EL112 or EL401 with a B10V glass 10-pin base with one big pin for the anode; FL152 with a different heater; EL153 – SW/VHF power pentode; EL156 – Power pentode, Y10A steel tube 10-pin base; EL171 – 4-Watts Power pentode, gnome tube
In 1971, Fusion UV Systems installed a 300-watt electrodeless microwave plasma UV lamp on a Coors can production line. [7] [8] Philips introduced their QL induction lighting systems, operating at 2.65 MHz, in 1990 in Europe and in 1992 in the US. Matsushita had induction light systems available in 1992.
The coding for vacuum devices differs between Philips (and other Continental European manufacturers) on the one hand and its Mullard subsidiary on the other. Philips vacuum devices: A; Microwave tubes: Output power <1W; Other tubes: Directly heated tungsten filament; B; Microwave tubes: Output power ≥1W; Other tubes: Directly heated thoriated ...
10 3: kilo-(kW) 1–3 × 10 3 W tech: heat output of a domestic electric kettle: 1.1 × 10 3 W tech: power of a microwave oven: 1.366 × 10 3 W astro: power per square meter received from the Sun at the Earth's orbit: 1.5 × 10 3 W tech: legal limit of power output of an amateur radio station in the United States up to 2 × 10 3 W
A microwave oven or simply microwave is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. [1] This induces polar molecules in the food to rotate and produce thermal energy in a process known as dielectric heating .
The EL34 is a thermionic vacuum tube of the power pentode type. The EL34 was introduced in 1955 by Mullard, who were owned by Philips. [1] The EL34 has an octal base (indicated by the '3' in the part number) and is found mainly in the final output stages of audio amplification circuits; it was also designed to be suitable as a series regulator by virtue of its high permissible voltage between ...
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