Monday, February 7, 2011
Weak current College】 【power technology glossary (2)】.
<br> CREST FACTOR crest factor in AC circuits, waveform peak and RMS (rms). In the transmit power under certain conditions, along with large peak, RMS Zeng (rms) zeng also. Therefore, the power consumption also zeng. Crest factor .sometimes used to illustrate the AC power cord of the stress in the current. Crest factor is basically the same information as the power factor describes, and, in the power terms, may be replaced by the power factor. Crossover adjustment CROSS REGULATION all output load .change on another way to output load adjustment function. Typically, no second adjustment (prospective adjustment) of the output circuit produces cross adjustment. Dramatic short circuit CROWBAR an overvoltage protection method. Overvoltage fault is detected, in order to protect the load, this circuit .allows the power output end rapid short circuit to ground. Current limiting CURRENT LIMITING an overcurrent protection circuit. In order to protect the load and power, current limiting protection circuit can limit the power of the maximum output current. Current-CURRENT MODE switching converter for .a control method, using the current-control method, the converter control circuit through a double loop, according to the detection of output current and output voltage pulse width, so that the stable output voltage. Current monitor CURRENT MONITOR output and output current proportional to .an analog signal. D the DC-DC CONVERTER DC-DC converter DC voltage transition from one to another voltage circuits. <br> Also: dc dc converters, dc / dc converters, DC-DC converter DC DC-DC POWER SUPPLY for one .or more of the DC output voltage of power supply system. <br> Also: dc dc power supply, dc / dc power supply, DC DC power good signal DC-OK SIGNAL monitoring DC output status signals. Derating DERATING in order to improve reliability .and reduce the operating specifications. In the power system, when the ambient temperature is high, in order to secure work, often need to lower the power output. Design life of power supply DESIGN LIFE expected service life. At this time, the power supply .operation should be consistent with the labeling requirements. Differential mode noise DIFFERENTIAL MODE EMI NOISE elimination, in two power cords to the power line between measured on a datum point of noise. Test results for two power line noise component. In the power system usually in .DC output and DC back-end test noise. Distributed power architecture DISTRIBUTED POWER ARCHITECTURE center power to each adjacent load power structure. Often using DC power supply. Drift DRIFT when power supply voltage, load and temperature, and other parameters remain unchanged, after the .warm-up process, the output voltage changes over time are called drift. Drive module DRIVER MODULE in separate or drive / times zeng module composite structure of the master control module. Drive module contains all the control circuits. Drop voltage DROPOUT AC input voltage lower .input voltage falls below this value, the output voltage is not stable. Online sexual power, a major drop voltage is determined by the power supply input voltage; most of the switching power supply, a major drop power decided to load current, input voltage low .-impact. Dynamic load regulation DYNAMIC LOAD REGULATION output current rapidly changing, the output voltage changes. E efficiency EFFICIENCY with percentage represents the total output power and input power ratio. Typically, the rated input voltage and 75% load, measuring or marking. Electronic .load ELECTRONIC LOAD received power output for a load of an electronic device. The load is typically can change dynamically, frequent changes or controlled by the computer. Electromagnetic compatibility and ELECTROMAGNETIC emission of electromagnetic waves COMPATIBILITYEMC on and feel standards. EMI ELECTROMAGNETIC INTERFERENCEEMI this is power .supply, or other electronic and electric equipment working in harmful noise. Equivalent series resistance EQUIVALENT SERIES RESISTANCEESR and ideal capacitors in series of resistance values. It can reflect the true nature of capacitors. F Mille Busbar FACTORIZED BUSVf by PRM or DC-DC converter produced .output voltage, and can be adjusted to control one or more product stability or VTMs. Mille-type power structure FACTORIZED POWER ARCHITECTUREFPAFPA (mille-type power architecture) is an innovative power distribution schema that the often used in distributed power architectures in DC-DC .converter's traditional function into voltage and voltage isolation / transformation component. Although the "pure" Mille-type power architecture (FPA) should be composed of various V • I chip (VIC), but the traditional power products, such as DC-DC converter ., non-isolated pol converters and switches are also constitute part of the FPA system. Fault TOLERANT CONFIGURATION FAULT-tolerant architecture uses they with the working circuit, access output isolation diode, single power supply (modules) of failure does not enable the output voltage .of power supply system. In this structure, single power supply fails, the relative with the system's total output current cannot be less than the load requirements of the current, that is, a single power supply fails, the relative with system cannot be overloaded. .Field-effect transistor FIELD EFFECT TRANSISTORFET majority carrier - voltage control-type transistors. FINMOD Huai lattices VI series converter module and related modules with no flange with fins package. FLATPAC Huai cell with 1, 2 or 3 channel outputVoltage AC-DC switching power supply .. Rated output power to 50-600W. Suspended output FLOATING OUTPUT power output terminal voltage, not to the other any one output, usually indicates that the output all isolation. Suspended output power can be output as voltage, output negative voltage. Non-suspended .output power supply has a public return line, therefore, an output of the DC voltage to another output..