基本信息

• 发明名称： 【发明专利】 Improvements in or relating to electric semi-conductor devices
• 申请日： 1970-08-15
• 申请号/专利号： GB3274854
• 专利权人： 无
• 申请人： SIEMENS AG
• 分类号： G05F1/635
• 发明人/设计人： 无
• 公开日/公告日： 1970.08.15
• 优先权号： G05F1/635
• 代理机构：
• 代理人：
• PCT申请号： 无
• PCT申请日期： 无
• PCT进入国家阶段日： 无
• 生物宝藏信息： 无
• 审查员： 无

摘要：797,505. Automatic control systems. SIEMENS - SCHUCKERTWERKE AKT - GES. Nov. 11, 1954 [Nov. 11, 1953], No. 32748/54. Class 38 (4). [Also in Groups XXXVI and XL (c)] The output of a Hall effect device is connected to control, indicating or amplifying means and the semi-conductor body has a carrier mobility of at least 6000 cms2/volt sec. The Hall output may be applied to a valve, transistor or magnetic amplifier, a magnetic relay, or a controllable D.C. generator. Fig. 2 shows an arrangement which provides constant current through a load V. The Hall output from M is applied to a magnetic or other amplifier MV, the output of which varies inversely with the input which supplies the current through load V. This current also passes through coil EM to supply the magnetic field for Hall member M, and thus varies the Hall output so that a constant current then passes through load V and coil EM. A modification of the Fig. 2 arrangement is also described in which the load current passes through a servomotor which varies the position of a permanent magnet used to provide the magnetic field for the Hall member. Reference has been directed by the Comptroller to Specification 759,047, [Group XXXVI].

摘要附图：