Weak current College】 【power technology glossary (4)】.

M-line MAINS universal AC power supply cable. Ultimate power voltage MARGINING to verify the changes, the limits of the power system performance, the power supply output voltage from the nominal value upwards or downwards to the limit values. Usually use system control signal output voltage adjustment. MEGA MODULES use chassis-mounted package module, the module contains one, two or three VI-200 series converter module, 1-channel, 2-way or 3-way output voltage, output power up to 600W. M-class M-GRADE an industry standard. In order to meet the M-level standards, the device operating temperature not lower than-55 army regulations standard parallel C MIL SPECS in military environments used in the device must meet the standards. Small MINIMOD output power up to VI-200 series DC-DC converter modules of half of the small package (VI-J00) module, its volume is 2.28 in. (L) x2.4 inches (W) x0.5 mm (H). Min load current MINIMUM LOAD in order to meet the technical requirements, the power supply should have a minimum load current or minimum power. In order to prevent the power device failure, power frequency can not be too low, the load current is not too small. Module Evaluation Board MODULE EVALUATION BOARD is used to evaluate my arms that DC module testing device. Hope that can provide AC and DC input of the evaluation board. Mean time between failures (MTBF) for MEAN TIME BETWEEN FAILUREMTBF mean time between failures (MTBF) is 63% of the total number of products no longer meet the technical requirements of the time. MTBF can calculate or justification. Usually by MIL-STD-217 revision E introduction of methods of calculation. Also by temperature accelerated life test for justification. Demonstration of the MTBF is normally higher than the calculated MTBF is long. N rated input voltage NOMINAL INPUT voltage range of intermediate values. Rating NOMINAL VALUE one common value, average, ratings or working conditions. This value typically is not equal to the actual testing that values. Non-isolated pol converters (niPOLs) NON-ISOLATED POINT-OF-LOAD CONVERTERniPOL typical non-isolated pol converters (niPOLs) is to go bus conversion to low-voltage output of the converter. There are several manufacturers and various specifications. O offline OFF LINE power supply input power directly from the AC power supply. Rectifier and filter circuit, no use 50Hz/60Hz power transformers, such power as off-line power supply. Open frame OPEN FRAME a metal casing of the power supply. The power supply is a direct application of a frame, installation components and various connectors for printed circuit boards. Working temperature OPERATING TEMPERATURE in the working temperature range, the power supply to meet specifications. Opto-isolator OPTOISOLATOR a photoelectric device, it can transmit isolation DC circuit signals on both sides. Or door diode OR ' ING DIODES in a failed State, so that one power and another power isolation diode. Output filter OUTPUT FILTERING for attenuation switch power output ripple and noise filter. Output voltage a normal GOOD OUTPUT power supply status signal, it can instruct the output voltage within the prescribed tolerances, when the output voltage is too high or too low, the output voltage normal signal disappears. Output impedance OUTPUT IMPEDANCE output voltage of power supply volume and load zeng zeng content ratio. Output noise OUTPUT NOISE power supply DC output side AC component. Switching power supply output noise can generally be divided into two parts: frequency and converter switching frequency equal to the low-frequency noise and converter switch fast conversion of high-frequency noise. Using the oscilloscope detects the noise, must be enclosed in a very short period of grounding the probe measurement directly on the output side. Rated output power OUTPUT POWER RATING in maintaining safety certification, the power supply's maximum output power (W). Output voltage accuracy of OUTPUT VOLTAGE ACCURACY please refer to "setting the precision" overload protection OVERLOAD PROTECTION overload condition limiting the output current of a power protection circuit. Overshoot OVERSHOOT the power is switched on or off, or power supply voltage and load mutations, the instantaneous output voltage exceeds the maximum limit. Excessive heat warning OVERTEMP WARNING a TTL-compatible signal, which indicates that the power supply is too hot. Overvoltage protection OVERVOLTAGE PROTECTIONOVP a power protection circuit, when the output voltage is too high, the circuit can shut off the power supply or power output short circuit and the Earth. P relative with double PARALLEL BOOSTVI-200 drive module can only multiplier module which family with several kilowatts of power output. Multiplier module does not have any feedback or control circuit. They work with PARALLEL OPERATION in order to output more current, two or more power output can be connected together. They jointly, each power must have load-sharing functionality. Cycle or irregular migration PERIODIC AND RANDOM DEVIATIONPARD it is power DC output all ripple and noise component of and, regardless of their nature or origin. Peak power PEAK POWER at will not directly damaged, the power supply to the absolute maximum power output. Peak output power of typical values are more than continuous output power, average power, however, cannot exceed the rated power.