| 摘要 |
electrical engineering; ballast resistor manufacture. SUBSTANCE: ballast resistor has core assembly 4 incorporating one pair of sets of cores 3 symmetrically inserted in spool 2 wound with copper wire 1; one holder passed through drawing die that has gradually contracting passage with wide inlet for compressing and securing entire core assembly 4. Said method and device for manufacturing this ballast resistor are given in description of invention. EFFECT: enhanced stability of power supply to gaseous-discharge lamp. 13 cl, 13 dwg |
