| 摘要 |
FIELD: electrical engineering, stabilization of rotational speed of single-phase commutator motors, specifically of hand electric tools. SUBSTANCE: stabilizer has triac 1 placed in series with electric motor 2 in A.C. circuit, unit 3 controlling triac in current feed back circuit 4 with current transformer 6, capacitor 9 parallel to it, resistor 8 placed in series between rectifier 6 and capacitor 9 and voltage limiter 10 parallel to it. EFFECT: improved manufacturability, increased operational reliability, simplified design and high dynamic characteristics. 1 dwg |
