SUPPLY-LINE FILTER FOR EQUIPMENT FED FROM A C NETWORK WITH GROUNDED NEUTRAL Russian patent published in 2003 - IPC

FIELD: electrical engineering. SUBSTANCE: invention refers specifically to supply-line filter for equipment fed from A C network with grounded neutral that incorporates passive two-link LC filter, semiconductor voltage limiters and devices which indicate serviceability of semiconductor voltage limiters. Proposed supply-line filter protects radio electronic hardware against various high-voltage interference emerging in supply line. Availability of semiconductor voltage limiters makes it possible to diminish requirements specified for elements of LC filter which makes supply-line filter less expensive and decreases its dimensions. Given supply-line filter is named " FION ". EFFECT: enhanced functional reliability, decreased dimensions and reduced cost of supply-line filter. 4 cl, 4 dwg _