Rotary variable differential transformer information
Type of electrical transformer
This article focuses only on one specialized aspect of the subject. Please help improve this article by adding general information and discuss at the talk page.(October 2009)
A rotary variable differential transformer (RVDT) is a type of electrical transformer used for measuring angular displacement. The transformer has a rotor which can be turned by an external force. The transformer acts as an electromechanical transducer that outputs an alternating current (AC) voltage proportional to the angular displacement of its rotor shaft.
In operation, an alternating current (AC) voltage is applied to the transformer primary to energize the RVDT. When energized with a constant AC voltage, the transfer function (output voltage vs. shaft angular displacement) of any particular RVDT is linear (to within a specified tolerance) over a specified range of angular displacement.
RVDTs employ contactless, electromagnetic coupling, which provides long life and reliable, repeatable position sensing with high resolution, even under extreme operating conditions. Most RVDTs consist of a wound, laminated stator and a salient two-pole rotor. The stator, containing four slots, contains both the primary winding and the two secondary windings, which may be connected together in some cases. RVDTs offer advantages such as sturdiness, relatively low cost, small size, and low sensitivity to temperature, primary voltage and frequency variations.
and 24 Related for: Rotary variable differential transformer information
The linear variabledifferentialtransformer (LVDT) – also called linear variable displacement transformer, linear variable displacement transducer, or...
A rotaryvariabledifferentialtransformer (RVDT) is a type of electrical transformer used for measuring angular displacement. The transformer has a rotor...
the resolver, the rotaryvariabledifferentialtransformer (RVDT), and the rotary potentiometer. A linear encoder is similar to a rotary encoder, but measures...
parallel to the variable sections, used to adjust all tuned circuits to the same frequency. A butterfly capacitor is a form of rotaryvariable capacitor with...
commonly used in helical scan magnetic tape applications. A variabledifferentialtransformer is a rugged non-contact position sensor. It has two oppositely-phased...
a rotary motion of the contacts. rotarytransformer A transformer used to couple electric signals or power between rotating parts. rotaryvariable differential...
output same as TX but supplied to a control transformer or control differential transmitter. Torque differential transmitter (TDX) Input: TX output applied...
generate tones Position, motion Linear variabledifferentialtransformer (LVDT) – Magnetic – detects linear position Rotary encoder, Shaft Encoder – Optical...
a 240 kW 86 V 40 Hz alternator and a step-up transformer while at the exhibition a step-down transformer fed a 100-hp three-phase induction motor that...
diaphragm by means of changes in inductance (reluctance), linear variabledifferentialtransformer (LVDT), Hall effect, or by eddy current principle. Piezoelectric:...
Rotary friction welding (RFW) one of the methods of friction welding, the classic way of which uses the work of friction to create a not separable weld...
short-circuited transformer secondary winding; the large currents induced in them cause power losses. A type of continuously variable air core inductor...
of different active or variable resistance (or self-inductance); Pairs of mains connected and a multiple circuit differential phase; Change of time-period...
current (AC) or direct current (DC). The voltage level is changed with transformers. The voltage is stepped up for transmission, then reduced for local distribution...
usually driven through a step-up transformer that multiplies the voltage swings produced by the power amplifier. This transformer also multiplies the capacitive...
Reactive Components, Basic AC Power, Basic AC Generators Vol. 4, AC Motors, Transformers, Test Instruments & Measuring Devices, Electrical Distribution Systems...
development in the manufacture of Portland cement was the introduction of the rotary kiln. It produced a clinker mixture that was both stronger, because more...
distances. Likewise the introduction of the rotary converter (in connection with the "step-down" transformer) which converts alternating currents into direct...
Global Information