Bridge circuit - Wikipedia, the free encyclopedia. A bridge circuit is a type of electrical circuit in which two circuit branches (usually in parallel with each other) are "bridged" by a third branch connected between the first two branches at some intermediate point along them. The bridge was originally developed for laboratory measurement purposes and one of the intermediate bridging points is often adjustable when so used. Bridge circuits now find many applications, both linear and non- linear, including in instrumentation, filtering and power conversion.[1][2]. Schematic of a Wheatstone bridge. The best- known bridge circuit, the Wheatstone bridge, was invented by Samuel Hunter Christie and popularized by Charles Wheatstone, and is used for measuring resistance. It is constructed from four resistors, two of known values R1 and R3 (see diagram), one whose resistance is to be determined Rx, and one which is variable and calibrated R2. Two opposite vertices are connected to a source of electric current, such as a battery, and a galvanometer is connected across the other two vertices. The variable resistor is adjusted until the galvanometer reads zero. Intro: AC to DC converter=diode bridge. A diode bridge is a device that changes Alternating Current(AC) to Direct Current(DC). The difference between these two kinds.It is then known that the ratio between the variable resistor and its neighbour R1 is equal to the ratio between the unknown resistor and its neighbour R3, which enables the value of the unknown resistor to be calculated. The Wheatstone bridge has also been generalised to measure impedance in AC circuits, and to measure resistance, inductance, capacitance, and dissipation factor separately. Various arrangements are known as the Wien bridge, Maxwell bridge and Heaviside bridge.[3] All are based on the same principle, which is to compare the output of two potentiometers sharing a common source. In power supply design, a bridge circuit or bridge rectifier is an arrangement of diodes or similar devices used to rectify an electric current, i. In some motor controllers, an H- bridge is used to control the direction the motor turns. See also[edit]Gallery[edit]References[edit]^Bureau of Naval Personnel, Basic Electricity, p. Courier Dover Publications, 1. ISBN 0- 4. 86- 2. Clarence W. De Silva, Vibration monitoring, testing, and instrumentation, pp. A diode bridge is an arrangement of four. Since this is true whether the input is AC or DC. Kelvin bridge; Wheatstone bridge; RC: Wien bridge. Dc Resistance Bridge. B23A DC Wheatstone Bridge. wholesale passenger boarding bridge ac dc supplier dc resistance bridge suppliers dc resistance. June 1990 Bridge Circuits. Figure 51. Fast AC/DC Converter Operating at 1MHz. a pressure transducer of the Wheatstone bridge type. . and circuit simulations on CircuitLab tagged 'wheatstone-bridge. converter) amplifier. Simulate > DC. ac-to-dc active-filter. Wheatstone Bridge AC Bridge School of EEE Chapter - 5 16 Wheatstone Bridge R1 V?V = Vac – Vbc. Coupler De-modulator Output Buffer DC:DC Converter DC Supply. B9852CR Mini clip converter. Clamp-on Tester For AC/DC Current #CL235. Precision Wheatstone Bridge 2768; Decade Resistance Boxes 2786. DC Bridge Circuits DC Electric Circuits. (a “Wheatstone” bridge). an inversion of source and load converts the buck converter into a boost. The Wheatstone bridge has also been generalised to measure impedance in AC circuits. a bridge circuit or bridge rectifier is an arrangement of diodes or similar. CRC Press, 2. 00. ISBN 1- 4. 20. 0- 5. All about circuits: AC bridge circuits. External links[edit].
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