发明名称 Tape material roller drive system - has motor supply regulated by switch unit reacting to current value
摘要 <p>The tape material roller drive system is particularly for use in photographic processing machines, having a variable-speed direct-current motor. An electrical switching stage (2) is connected in the supply to the motor (1), preferably in that to the armature (1a). This is regulated by a switch unit (12) reacting to the value of the current through the motor. The switch unit can be a controllable semiconductor, preferably a thyristor, functioning at a predetermined amount of voltage drop at a resistance (8) in the motor supply circuit, and causing the switching stage to cut off this supply.</p>
申请公布号 DE2603660(A1) 申请公布日期 1977.08.04
申请号 DE19762603660 申请日期 1976.01.30
申请人 AGFA-GEVAERT AG 发明人 GANSER,FRIEDRICH
分类号 H02P7/288;(IPC1-7):65H17/00 主分类号 H02P7/288
代理机构 代理人
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