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However, a transformer may include a tap changer on each winding if there are advantages to do so. For example, in power distribution networks, a large step-down transformer may have an off-load tap changer on the primary winding and an on load automatic tap changer on the secondary winding or windings. The high voltage tap is set to match long ...
Both linear spacing and power-of-two-style Vernier spacing can be employed in establishing the tap positions, e.g., a four-tap transformer can provide taps at 0.25, 0.5, 0.75, 1.0 (linear) or 0.0625, 0.125, 0.25, and 0.5 (Vernier). (The limitations of the Vernier—in this case, that the maximum obtainable amplitude is 0.9375—are less ...
center tap A connection on a transformer which has equal voltage to either end of the transformer winding. ceramic resonator A piezoelectric element used to stabilize the frequency of an oscillator. channel Any communication path between a signal transmitter and a signal receiver, or, a pre-selected operating frequency for a radio system.
A leakage transformer, also called a stray-field transformer, has a significantly higher leakage inductance than other transformers, sometimes increased by a magnetic bypass or shunt in its core between primary and secondary, which is sometimes adjustable with a set screw. This provides a transformer with an inherent current limitation due to ...
In switch-mode power supplies, center-tapped transformers are often used, sometimes with single diodes or a dual diode half-bridge [2] to optimize their dynamic electromagnetic behavior at the expense of the extra windings. [3] Phantom power can be supplied to a condenser microphone using center tap transformers. One method, called "direct ...
A transformer is called "additive" if, conceptually, connecting the high-voltage terminal to the adjacent low-voltage terminal gives a total voltage between the other two terminals that is the sum of the high voltage and low voltage ratings, when the high-voltage winding is excited at rated voltage.
A coil tap is a wiring feature found on some electrical transformers, inductors and coil pickups, all of which are sets of wire coils.The coil tap(s) are points in a wire coil where a conductive patch has been exposed (usually on a loop of wire that extends out of the main coil body).
The following other wikis use this file: Usage on ar.wikipedia.org رموز العناصر الإلكترونية; Usage on en.wikibooks.org Electronics/Symbols