| 摘要 |
FIELD: electrical engineering, control and stabilization of rotational speed of commutator motor, provision of smooth of hand electric tools. SUBSTANCE: stabilizer has triac 1 placed in series with electric motor 2 into A. C. circuit. Control electrode of triac 1 is connected via threshold element 4 to control circuit 5 incorporating amplification unit 14. Amplification unit can regulate output current depending of load current of motor 2 with the aid of inserted unit 19 of smooth start and manual control. EFFECT: increased functional reliability, avoidance of overloads of elements of circuit due to smooth acceleration of motor, prevention of breakdown of tool at start of operation, improved ergonomic characteristics of tool. 1 dwg |
