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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 ...
The first patented magnetic induction loop communication system was invented by Joseph Poliakoff (grandfather of Sir Martyn Poliakoff) in Great Britain in 1937. [ 3 ] [ 4 ] [ 5 ] The pickup coil in a hearing aid is known as a telecoil (or T-coil ) because its early form was to pick up a magnetic field from coils within a telephone .
KRMG (740 kHz) is a commercial AM radio station in Tulsa, Oklahoma.The station is owned by Cox Media Group and airs a news/talk radio format, simulcast with co-owned 102.3 KRMG-FM.
The Nyquist plot for () = + + with s = jω.. In control theory and stability theory, the Nyquist stability criterion or Strecker–Nyquist stability criterion, independently discovered by the German electrical engineer Felix Strecker [] at Siemens in 1930 [1] [2] [3] and the Swedish-American electrical engineer Harry Nyquist at Bell Telephone Laboratories in 1932, [4] is a graphical technique ...
A control loop is the fundamental building block of control systems in general and industrial control systems in particular. It consists of the process sensor, the controller function, and the final control element (FCE) which controls the process necessary to automatically adjust the value of a measured process variable (PV) to equal the value of a desired set-point (SP).
In control theory, an open-loop controller, also called a non-feedback controller, is a control loop part of a control system in which the control action ("input" to the system [1]) is independent of the "process output", which is the process variable that is being controlled. [2]
Instead of being able to calmly focus on her chemotherapy treatment, Arete Tsoukalas had to spend hours on the phone arguing with her insurer while receiving infusions in the hospital.
In electronics and control system theory, loop gain is the sum of the gain, expressed as a ratio or in decibels, around a feedback loop. Feedback loops are widely used in electronics in amplifiers and oscillators , and more generally in both electronic and nonelectronic industrial control systems to control industrial plant and equipment.