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VF14 – Sharp-cutoff pentode, 55 V heater, Y8A 8-pin steel tube base, identical to EF14 and UF14 except for heater ratings [2] VF14M – Selected VF14 in production until the end of the 1950s for use as a preamplifier in Neumann condenser microphones U-47 and U-48 where they were run at only half their rated heater power to reduce noise [ 58 ]
T – Custom heater; U – 100 mA AC/DC series heater; V – 50 mA AC/DC series heater; X – 600 mA AC/DC series heater; Y – 450 mA AC/DC series heater, shifted to L to avoid conflicts with the professional tubes system; Z – Cold cathode tube; was shifted here from O after the advent of semiconductors; Second and subsequent letters: system ...
A 440-volt capacitor can be used in place of a 370-volt, but not a 370-volt in place of a 440-volt. [2] The capacitance must remain within 5% of its original value. [ 2 ] Round cylinder-shaped dual run capacitors are commonly used for air conditioning , to help in the starting of the compressor and the condenser fan motor. [ 2 ]
These were generally of dry cell construction and typically came in 22.5-, 45-, 67.5-, 90-, 120- or 135-volt versions. After the use of B-batteries was phased out and rectified line-power was employed to produce the high voltage needed by tubes' plates, the term "B+" persisted in the US when referring to the high voltage source.
12 to 40 < 100(?) 1 Ceramic capacitors, Class 2 ... at a reactive power of 200 volt-amperes. Film power capacitors mostly use polypropylene film as the dielectric ...
The attempted robbery took place just before 5 a.m. on Dec. 9, according to ABC News' Washington affiliate KOMO. Failed ATM robbers crash truck into Walgreens storefront, leave empty-handed Skip ...