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Four-point measurement of resistance between voltage sense connections 2 and 3. Current is supplied via force connections 1 and 4. In electrical engineering, four-terminal sensing (4T sensing), 4-wire sensing, or 4-point probes method is an electrical impedance measuring technique that uses separate pairs of current-carrying and voltage-sensing electrodes to make more accurate measurements ...
"Hamsterdam" (called "Amsterdam" in some releases) is the fourth episode of the third season of the HBO original series The Wire. The episode was written by George Pelecanos from a story by David Simon & George Pelecanos and was directed by Ernest Dickerson.
"That's Got His Own" is the 12th episode of the fourth season of the HBO original series The Wire. Written by George Pelecanos from a story by Ed Burns & George Pelecanos, and directed by Joe Chappelle , it originally aired on December 3, 2006.
An induction or inductive loop is an electromagnetic communication or detection system which uses a moving magnet or an alternating current to induce an electric current in a nearby wire. Induction loops are used for transmission and reception of communication signals, or for detection of metal objects in metal detectors or vehicle presence ...
When such a connector is twisted onto the stripped ends of wires, the wires are drawn into the connector's metal insert and squeezed together inside it. Electrical continuity is maintained both by the direct twisted wire-to-wire contact and by contact with the metal insert. Twist-on wire connectors are typically installed by hand.
MacDon swather New Holland Haybine H8040 self-propelled swather. A swather (North America), or windrower (Australia and rest of world), is a farm implement that cuts hay or small grain crops and forms them into a windrow for drying. Crimper rollers and cutting discs. They may be self-propelled with an engine, or drawn by a tractor and power ...
A VR sensor used as a simple proximity sensor can determine the position of a mechanical link in a piece of industrial equipment. A crankshaft position sensor (in an automobile engine) is used to provide the angular position of the crankshaft to the engine control unit. The engine control unit can then calculate engine speed (angular velocity).
One wire carries a varying voltage that represents the signal, while the other wire is connected to a reference voltage, usually ground. The main alternative to single-ended signaling is called differential signaling where the two conductors carry signals equal in magnitude but of opposite electric polarity .