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Single Current Loop E Single Current Loop II
Single Current Loop E Single Current Loop II

... A current loop is a circuit with any number of elements in it that are connected so that current can flow around the loop. We compute such a loop by looking at the voltages across the devices, the sum of all these voltages has to add up to zero. Circuit Rules: Loop Rule: The sum of the changes in po ...
1 [e?*W 2_-^"pb)\Jo Physics 2020 Summer 2016 Richard Ingebretsen Exam 3
1 [e?*W 2_-^"pb)\Jo Physics 2020 Summer 2016 Richard Ingebretsen Exam 3

... have one 1 Cl resistor, one 2 Q resistor, one 5 Cl resistor and two 8 Q resistors. ...
Typical Current Loop
Typical Current Loop

... Signal sources such as 1-5mA, 4-20mA or 10-50mA are common in the process industry. For a two-wire transmitter the power supply is usually located in the control room. Since the current loop rides on the power supply it is important that voltage and current outputs are adequate to power up the numbe ...
abc - Southern Methodist University
abc - Southern Methodist University

... A loop of wire in the shape of a rectangle has resistance of 1 ohm. A long and straight wire carrying a current I lies on tabletop as shown in the figure. (a) Determine the magnetic flux through the loop due to the current I. (b) Suppose the current is changing with time according to I = a + bt, whe ...
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Loop antenna



A loop antenna is a radio antenna consisting of a loop (or loops) of wire, tubing, or other electrical conductor with its ends connected to a balanced transmission line. Within this physical description there are two very distinct antenna designs: the small loop (or magnetic loop) with a size much smaller than a wavelength, and the resonant loop antenna with a circumference approximately equal to the wavelength.Small loops have a poor efficiency and are mainly used as receiving antennas at low frequencies. Except for car radios, almost every AM broadcast receiver sold has such an antenna built inside it or directly attached to it. These antennas are also used for radio direction finding. In amateur radio, loop antennas are often used for low profile operating where larger antennas would be inconvenient, unsightly, or banned. Loop antennas are relatively easy to build.A small loop antenna, also known as a magnetic loop, generally has a circumference of less than one tenth of a wavelength, in which case there will be a relatively constant current distribution along the conductor. As the frequency or the size is increased, a standing wave starts to develop in the current, and the antenna starts to acquire some of the characteristics of a resonant loop (but isn't resonant); these intermediate cases thus cannot be analyzed using the concepts developed for the small and resonant loop antennas described below. Resonant loop antennas are relatively large, governed by the intended wavelength of operation. Thus they are typically used at higher frequencies, especially VHF and UHF, where their size is manageable. They can be viewed as a folded dipole deformed into a different shape, and have rather similar characteristics such as a high radiation efficiency.
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