In telecommunications, a repeating coil is a voice-frequency transformer characterized by a closed magnetic core, a pair of identical balanced primary (line) windings, a pair of identical but not necessarily balanced secondary (drop) windings, and low transmission loss at voice frequencies. It permits transfer of voice currents from one winding to another by magnetic induction, matches line and drop impedances, and prevents direct conduction between the line and the drop.
It is a special application of an isolation transformer, and is often used to prevent ground loops or earth loops, which cause humming or buzzing in audio circuits. It also prevents low direct current voltages from passing.
In telecommunications, a repeatingcoil is a voice-frequency transformer characterized by a closed magnetic core, a pair of identical balanced primary...
A Tesla coil is an electrical resonant transformer circuit designed by inventor Nikola Tesla in 1891. It is used to produce high-voltage, low-current,...
Tesla coil, an air-cored, dual-tuned resonant transformer for producing very high voltages at high frequency. Audio frequency transformers ("repeating coils")...
A coiledcoil is a structural motif in proteins in which 2–7 alpha-helices are coiled together like the strands of a rope. (Dimers and trimers are the...
storage coils must be well made. — The Ashley Book of Knots The mountaineer's coil (also alpine coil, climber's coil, lap coil, or standing coil) is a traditional...
An inductor, also called a coil, choke, or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric...
respective voltage drops by center-tapped transformers, usually called "repeatingcoils". The center taps are on the line side of the side circuits. Current...
breech block holds a strong coil spring, which pushes against the breech block. Caspar Kalthoff made a flintlock repeating gun in London between the years...
benefits of balance. This may be achieved by transformer coupling (repeatingcoils) or by merely balancing the impedance in each conductor. Lines carrying...
policy Government plans to displace fossil fuels with renewable sources. repeatingcoil An old name for a transformer, especially used in telephone circuits...
transformer (usually essential, but not shown on the diagram), known as a repeatingcoil, is at the beginning of the chain where the line terminates. Besides...
with calibrated operating characteristics and sometimes multiple operating coils are used to protect electrical circuits from overload or faults; in modern...
Nikola Tesla patented the Tesla coil circuit on April 25, 1891. and first publicly demonstrated it May 20, 1891 in his lecture "Experiments with Alternate...
configurational (repeating) units are identical. Tacticity is particularly significant in vinyl polymers of the type -H 2C-CH(R)- where each repeating unit with...
were the only way. In the telephony application they are known as repeatingcoils. Transformers have the additional advantage of completely isolating...
making multiple winds. Coil knot Knots used to tie up lines for storage. Decorative knot A complex knot exhibiting repeating patterns often constructed...
α-helix) is a sequence of amino acids in a protein that are twisted into a coil (a helix). The alpha helix is the most common structural arrangement in the...
heptad repeat is an example of a structural motif that consists of a repeating pattern of seven amino acids: a b c d e f g H P P H C P C where H represents...
through a wire wound into a coil creates a magnetic field through the center of the coil, due to Ampere's circuital law. Coils are widely used in electronic...
to denote powers of ten: Multiples of these values were expressed by repeating the symbol as many times as needed. For instance, a stone carving from...
material consisting of very large molecules linked together into chains of repeating subunits. Due to their broad spectrum of properties, both synthetic and...
transcontinental telephony practical. In the 1930s vacuum tube repeaters using hybrid coils became commonplace, allowing the use of thinner wires. In the 1950s negative...
recording the effect of this magnetic dipole on the induced current in a coil. The first magnetometer capable of measuring the absolute magnetic intensity...
poles leading from one end of the coil are an identical set leading from the other end. In all, this creates a repeating sequence of four poles, unshaded...
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