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Flyback Voltage
The term flyback may refer to: *Flyback chronograph, a single-push-button clock for stopping, resetting and restarting time measurement *Flyback converter, a type of DC to DC converter *Flyback diode, also known as a “freewheel diode”, a used to protect against spikes from inductive loads *Flyback transformer, used to drive cathode ray tubes *FlyBack, an open source backup utility {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flyback Chronograph
A flyback chronograph is a watch complication, in which the user can use the reset function without the need to first stop the chronograph. In regular chronographs, the user must stop, reset, and restart the chronograph in order to time an event after the chronograph has started. Other names The flyback function is also known by some other names: * Retour-en-vol (french: retour - to return; en - on; vol - flight) * Taylor system * Permanent zero setting Overview The flyback function is a complication inspired by everyday life, as are some other complications: world time, universal time, power reserve. Most flyback chronographs are constructed with the usual crown at 3 o'clock and 2 push-pieces at 2 and 4 o'clock. Usually the flyback function is controlled by the push-piece at 4 o'clock whereas the one at 2 o'clock is used to stop the chronograph. Many chronographs are equipped with the flyback function, especially watches meant for pilots. It is much easier from the point of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flyback Converter
The flyback converter is used in both AC/DC conversion, AC/DC, and DC-DC conversion, DC/DC conversion with galvanic isolation between the input and any outputs. The flyback converter is a buck-boost converter with the inductor split to form a transformer, so that the voltage ratios are multiplied with an additional advantage of isolation. When driving, for example, a plasma globe, plasma lamp or a voltage multiplier, the rectifying diode of the boost converter is left out and the device is called a flyback transformer. Structure and principle The schematic of a flyback converter can be seen in Fig. 1. It is equivalent to that of a buck-boost converter, with the inductor split to form a transformer. Therefore, the operating principle of both converters is very similar: * When the switch is closed (top of Fig. 2), the primary of the transformer is directly connected to the input voltage source. The primary current and magnetic flux in the transformer increases, storing energy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flyback Diode
A flyback diode is any diode connected across an inductor used to eliminate flyback, which is the sudden voltage spike seen across an inductive load when its supply current is suddenly reduced or interrupted. It is used in circuits in which inductive loads are controlled by switches, and in switching power supplies and inverters. This diode is known by many other names, such as snubber diode, commutating diode, freewheeling diode, suppressor diode, clamp diode, or catch diode. Operation Fig. 1 shows an inductor connected to a battery - a constant voltage source. The resistor represents the small residual resistance of the inductor's wire windings. When the switch is closed, the voltage from the battery is applied to the inductor, causing current from the battery's positive terminal to flow down through the inductor and resistor. The increase in current causes a back EMF (voltage) across the inductor due to Faraday's law of induction which opposes the change in current. Since ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flyback Transformer
A flyback transformer (FBT), also called a line output transformer (LOPT), is a special type of electrical transformer. It was initially designed to generate high voltage sawtooth signals at a relatively high frequency. In modern applications, it is used extensively in switched-mode power supplies for both low (3 V) and high voltage (over 10 kV) supplies. History The flyback transformer circuit was invented as a means of controlling the horizontal movement of the electron beam in a cathode ray tube (CRT). Unlike conventional transformers, a flyback transformer is not fed with a signal of the same waveshape as the intended output current. A convenient side effect of such a transformer is the considerable energy which is available in its magnetic circuit. This can be exploited using extra windings to provide power to operate other parts of the equipment. In particular, very high voltages are easily obtained using relatively few turns of windings which, after rectificati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
