| 摘要 |
FIELD: aviation. ^ SUBSTANCE: invention concerns air traffic control and can be applied to prevent low-flying aircrafts from crushing into power transmission line. Device includes receiver attached parallel to one of phase cables in transmission line. One receiver end is fixated to phase cable over insulator, while the other end is attached to the case of electronic current transducer attached to phase cable of transmission line. Semiconductor diode is used as alarm light. Two diodes are connected to the receiver, one by anode and the other by cathode. Each diode is connected in line to condenser. Both condensers are joined at common point connected to phase cable. A sequence of semiconductor LED and dynistor is connected between connection points of each condenser and diode couple. Cathode of first diode is connected to LED anode, while anode of second diode is connected to dynistor cathode. ^ EFFECT: enhanced device reliability and life time and light power, reduced power consumption. ^ 2 dwg |
