| 摘要 |
PROBLEM TO BE SOLVED: To suppress the increase in temperature of a resistor for detecting armature current which is provided in a motor drive. SOLUTION: A pattern 10c for heat radiation is installed continuously with a conductive pattern 10 for grounding formed on a printed board 8 and a main body 5a of the resistor 5 for detecting armature current is brought into contact with the pattern 10c for heat radiation. Lead terminals 5b, 5b' led out from the main body 5a of the resistor are inserted into through holes which are so formed as to pass through the conductive patterns 9, 10 formed on the printed board 8 and the printed board 8 and then are soldered to the conductive patterns 9, 10. |
