ac-dcの例文

• Design of a controllable ac - dc coupled signal source
• Ac - dc - ac intelligent frequency converted speed control system for mine hoist
• Analysis and design of three phase ac - dc converter with current indirect control
• Control strategy of multi - drive system based on ac - dc - ac matrix converter
• Simulation research on ac - dc - ac frequency conversion timing control system with high - power
• Ac - dc converter
• Product imports , domestic electric power tools brush , brush ac - dc power generators
• Calibration of precision ac voltmeter at one frequency voltage combination by ac - dc transfer
• For highest accuracy , the calibrator will be calibrated using ac - dc transfer technique
• Calibration at each additional frequency voltage combination by ac - dc transfer , for the same equipment
• Ac voltage standards with fixed output voltages will be calibrated by ac - dc transfer measurements
• Main circuit adopts the ac - dc - ac structure and uses ipm ( intelligent power module ) as main switch
• For precision ac voltmeters requiring calibration at very high accuracy , ac - dc transfer technique will be used
• Note 3 : two channel transmitting output , only can has one alarm output , no feed output ; no 2226 v ac - dc power supply
• Second , the construction of ac - dc - ac locomotive emulation system , which contains introduction of main constitutional models , specific implement of special models , etc
• This presentation will overview researches and applications of quantum standards in electrical metrology such as dc voltage , resistance and ac - dc measurements
• Ac - dc transfer instruments will be calibrated by comparison with the laboratory standards , which cover the range 0 . 25 v to 1000 v and 40 hz to 1 mhz
• Comparing with the ac - dc - ac converter , the commutation process of a matrix converter ( mc ) is more complicated due to having no natural free - wheeling paths
• According to the study of frequency - conversion technology , it is available to convert the speed of asynchronism motor , adopting ac - dc - ac transducer , realizing to convert the speed
• The input of traditional ac - dc converter is diode - capacitance combined circuit . it ? input current wave presents pulse shape , and the power factor ( pf ) on ac line side is low