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The amplification factor of 6N2P is 98 which is marginally lesser than 12AX7, its higher heater current draw is similar to a 5751. The Chinese 6N4 (whose military issued variant is known by the designation 6N4-J) which is a pin-compatible replacement for the 12AX7 but has an amplification factor of 97.5 is the closest equivalent to the 6N2P.
12AX7 (also known as ECC83 [1]) is a miniature dual-triode vacuum tube with high voltage gain. Developed around 1946 by RCA engineers [ 2 ] in Camden, New Jersey , under developmental number A-4522, it was released for public sale under the 12AX7 identifier on September 15, 1947.
It belongs to a large family of dual triode vacuum tubes which share the same pinout (EIA 9A), including in particular the very commonly used low-mu 12AU7 and high-mu 12AX7. The 12AT7 has somewhat lower voltage gain than the 12AX7, but higher transconductance and plate current, which makes it suitable for high-frequency applications.
8 ft 6 in 3 ft 2 in 6 ft 8 1 ⁄ 2 in 18 in 30 in 4 200 psi 20,530 lbf 3473-82; renumbered 3800-39 [16] [8] [17] 4400: Churchward 1904 2-6-2T 6 ft / 5 ft 6 in 3 ft 2 in 4 ft 1 1 ⁄ 2 in 3 ft 2 in 16 1 ⁄ 2 in 24 in 5 180 psi 20,195 lbf 4400-10 [18] [19] 2221 County Tank: Churchward 1905 4-4-2T 8 ft 6 in 3 ft 2 in 6 ft 8 1 ⁄ 2 in 3 ft 8 in ...
3,810 mm (12 ft 6 in) Length: 11,170 mm (36 ft 8 in) Loco weight: 12a: 39.0 t (43.0 short tons; 38.4 long tons) ... It was not until July 1, 1920, that the Type 12 ...
A foot-lambert or footlambert (fL, sometimes fl or ft-L) is a unit of luminance in United States customary units and some other unit systems. A foot-lambert equals 1/π or 0.3183 candela per square foot , or 3.426 candela per square meter (the corresponding SI unit ).
The first examples of the type were two 3 ft 6 in (1,067 mm) 2-6-2+2-6-2 L class Garratts built for the Tasmanian Government Railways in 1912. This wheel arrangement also included the final Garratts to be built by BP, seven 2 ft ( 610 mm ) South African Class NG G16 locomotives in 1958.
The National 12 is a two-person, two-sail, twelve-foot (3.6 metre) long sailing dinghy. [1] They are sailed extensively in the UK. The class was started in 1936 by the Royal Yachting Association as an alternative to the more expensive International 14s .
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