FIELD: high-voltage power supplies for load electronic circuits. SUBSTANCE: circuit device used to feed electronic circuit of load with high voltage whose absolute value is higher than supply voltage of circuit device has pumping circuit which is connected to load circuit and supplies load circuit with high voltage depending for its operation on inherent switching signal at preset pumping frequency so that power conveyed from pumping circuit to load circuit mainly depends both on supply voltage and on pumping frequency of pumping-circuit switching signal. Circuit device is provided with electronic control circuit attached to pumping circuit and supplied with at least derivative voltage of pumping-circuit supply voltage; this electronic control circuit functions to feed pumping circuit with switching signal that varies pumping frequency to build up high voltage due to pumping circuit so that pumping frequency of switching signal is reversed in proportion to supply voltage. EFFECT: enlarged range of supply voltages. 13 cl, 3 dwg
