| 摘要 |
FIELD: converter engineering; subsurface metal structures, storage battery chargers, aircraft engine starting units, motor-cars, power supplies for desalting plants, and other applications. ^ SUBSTANCE: proposed dc voltage supply that can be used for protection against electrochemical corrosion and incorporates provision for raising input impedance of measuring circuits to hundreds of megohms and for reliable operation at ac sine-voltage noise signal of 50 Hz and over 5 V at input of active filter unit has radio noise and surge voltage protection filter unit, switching apparatus, phase current sensor, transformer, controlled rectifier, ripple filter, output current limiting and regulation sensor, radio noise and surge voltage protection filter, protective gear power transformer, rectifier, protective gear final element, operating time counter, control unit, power transformer, power supply unit, reference voltage unit, error signal amplifier unit, pulse shaping unit, power amplifier unit, mode-of-operation switch, active filter unit, voltage divider, voltage follower, and active low-pass filter. Active filter unit is provided with series-connected second voltage divider, second voltage follower, and channel selector switch. ^ EFFECT: reduced feedback signal measurement error, enhanced precision of desired parameter maintenance, reduced mass of ripple filter. ^ 2 cl, 5 dwg |
