| 摘要 |
<p>1302257 D.C. electric motors MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 22 May 1970 [28 May 1969(4) 10 Nov 1969] 25000/70 Heading H2A [Also in Division G3] The armature of a small D.C. motor, usable e.g. in record players, tape recorders and car sterios, includes a core having an auxiliary pole 44 without an armature coil and main poles 43, 43<SP>1</SP> each having a respective armature coil 42, 42<SP>1</SP>, and a commutator 48 the number of whose segments 49...51 is at least equal to the total number of main and auxiliary poles. The two coils shown are supplied from a D.C. source 54 via brushes 52, 53 and are V- connected between the three segments with the interposition of the contacts 46, 47 and 46<SP>1</SP>, 47<SP>1</SP> of a speed controlling governor 45 secured to the shaft. The speed may be controlled by a series transistor (see Division G3).</p> |
