DC-TO-DC VOLTAGE CHANGER Russian patent published in 1996 - IPC

FIELD: electrical engineering. SUBSTANCE: voltage changer has controlled valve 1, current sensor (limiter) 2, variable resistor 5, reactor 7 with leads 8, 15, 10 leads 3 and 4 for connecting control source 9 and lead 11 for connecting d.c. voltage supply, as well as leads 12 and 16 for connecting load 13, controlled keys (resistors) 21 and 23, additional control input 18 of controlled resistor 5 and its additional output 20, 19 - additional sensor or indicator, or control source, 6 -controlled resistor transistor. EFFECT: provision for controlled device current limiting and regulation, its automatic turning off upon occurrence of accidents. 7 cl, 38 dwg