基本信息

• 发明名称： 【发明专利】 Improvements in or relating to instruments for measuring magnetic fields
• 申请日： 1970-08-15
• 申请号/专利号： GB3141153
• 专利权人： 无
• 申请人： SIEMENS AG
• 分类号：
• 发明人/设计人： 无
• 公开日/公告日： 1970.08.15
• 优先权号：
• 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：759,047. Semi-conductor devices. SIEMENSSCHUCKERTWERKE AKT.-GES. Nov. 12, 1953 [Nov. 12, 1952], No. 31411/53. Class 37. An instrument for measuring a magnetic field comprises a member, consisting of a semi-conducting compound of Am Bv type and having a carrier mobility of at least 6000 cms.2/volt. sec. AIII Bv type refers to a compound of one of the elements B, A1, Ga, or In with one of the elements N, P, As or Sb. The field may be measured by means of a bridge circuit adapted to measure the change in resistance of the member when subjected to the magnetic field. Alternatively the Hall effect of the member may be utilized as shown in Fig. 2, in which measurement is effected by balancing the Hall potential developed in member M against a standard potential obtained from potentiometer K. Fig. 3 shows a bridge circuit arrangement in which the combination of the resistance change and the Hall potential both developed by member M, when it is subjected to the magnetic field, are utilized to measure the magnetic field. Specification 719,873 is referred to.

摘要附图：