SPARK-PROOF METHOD Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: in nominal mode energy of spark-dangerous source of power of constant current is being transformed into energy of high frequency alternative current. Then the high frequency alternative current is being differentiated and circuit of the spark-dangerous current is separated by galvanization from output spark-safe circuit. In the case current and voltage in the spark-dangerous circuit is kept under control. New operations differentiate voltage, that is fed to spark-safe circuit in instant of emergency commutation is happened in it. By signal of current frequency deviation energy of high frequency alternative current, that is fed from spark-dangerous source of power, is limited by reactive loading spare members to spark-safe value within time period, that is less than time period of minimum core of flame formation. EFFECT: spark-proof method is used in electrical engineering. 1 dwg