| 摘要 |
FIELD: electronic equipment.SUBSTANCE: invention can be used for uninterrupted power supply with constant stabilised voltage 27 V of responsible consumers of various radio-electronic objects, having primary power supply from two independent three-phase AC mains of 3~50 Hz 380 V without neutral. Result is ensured by the fact that the device consists of two power high-frequency stabilised AC voltage converters of 3~50 Hz 380 V into DC 27 V, in which power transformers, providing galvanic isolation of supply networks, have high operating frequency (tens of kilohertz) and, as a result, small dimensions and weight. Besides, the outputs of transducers are connected with the help of diode circuit ′′MOUNTING OR′′, performing the function of switch of supply networks, which has high speed (0.5…10 microseconds) and does not require use of any power accumulating elements (batteries, capacitors, etc.).EFFECT: technical result of invention consists in reduction of weight and dimensions of the device, simplification of circuit design solutions and low cost combined with high level of reliability and high quality of supplied electric energy of direct current.3 cl, 1 dwg |
