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The requirement for a VFD was created by the Animal Drug Availability Act 1996 (P.L. 104-250). [1] Regulations related to the VFD are published by the FDA's Center for Veterinary Medicine in 21 CFR 510, 514, and 558. [1] A VFD is required for any species of animal fed medicated feed containing a VFD drug; this law is not limited to livestock. [2]
Futaba Corporation (双葉電子工業株式会社, Futaba Denshi Kōgyō Kabushiki-gaisha) is a Japanese company founded in 1948, originally to produce vacuum tubes. [3] As time passed, production and elemental techniques of the vacuum tube transformed into the manufacturing of vacuum fluorescent displays (VFDs), tool and die set components, radio control equipment and OLED displays.
Small variable-frequency drive Chassis of above VFD (cover removed). A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable voltage variable frequency drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the ...
The earliest form of sequential (although not proportional) actuator for radio control was the escapement. [3] Like the device used in clocks, this escapement controls the release of stored energy from a spring or rubber band. Each signal from the transmitter operates a small solenoid that then allows a two- or four-lobed pawl to rotate.
In vector control, an AC induction or synchronous motor is controlled under all operating conditions like a separately excited DC motor. [21] That is, the AC motor behaves like a DC motor in which the field flux linkage and armature flux linkage created by the respective field and armature (or torque component) currents are orthogonally aligned such that, when torque is controlled, the field ...
1:10 scale radio-controlled car (Saab Sonett II)A radio-controlled model (or RC model) is a model that is steerable with the use of radio control (RC). All types of model vehicles have had RC systems installed in them, including ground vehicles, boats, planes, helicopters and even submarines and scale railway locomotives.
Manufactured animal feed. Feed manufacturing refers to the process of producing animal feed from raw agricultural products. Fodder produced by manufacturing is formulated to meet specific animal nutrition requirements for different species of animals at different life stages.
A VFD operates on the principle of cathodoluminescence, roughly similar to a cathode-ray tube, but operating at much lower voltages. Each tube in a VFD has a phosphor-coated carbon anode that is bombarded by electrons emitted from the cathode filament. [1] [2] In fact, each tube in a VFD is a triode vacuum tube because it also has a mesh ...
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