| 摘要 |
<p>PURPOSE:To realize voltage measurement of high accuracy and miniaturize a current detector at low cost by joining a conductor to a circuit substrate on which a voltage measuring circuit is mounted, and enclosing both of them in the same case, and using one part of the conductor as a portion for installing the detector. CONSTITUTION:Holes 21a, 21b to each of which a feed path 31 through which a current to be measured is made to flow is connected are provided at both ends of a conductor 21 taking the form of a band plate, which ends serve as supporting portions for installation. A voltage measuring circuit 32 uses a temperature compensating element 27 as one part of the circuit and is mounted on the surface of a circuit substrate 26 which faces the conductor 21. The integrated conductor 21 and the substrate 26 on which the circuit 32 is mounted are both enclosed in a case. Voltages are generated at both ends of a resistance 22 by a current flowing through the conductor 21 and are transferred to the circuit 32 and measured. The circuit 32 has a C/U portion 33 and a temperature compensating portion 34 and the element 27 provided to the compensating portion 34 is installed in the vicinity of the resistance 22 and compensates for changes in temperature in response to the temperature change of the resistance value of the resistance 22.</p> |
