Abstract: A metal wiring plate includes a soldering portion to which an electronic device is soldered and a wiring portion extending from the soldering portion and configured to electrically connect the electronic device to other device. The wiring portion includes a narrow portion located adjacent to the soldering portion. The width of the narrow portion is less than the width of the soldering portion so that the narrow portion helps prevent melted solder applied to the soldering portion from spreading to areas outside the soldering portion. The narrow portion allows the electronic apparatus to be surely soldered to the soldering portion without using solder resist.

Abstract: An electrical connector assembly having a connector part for electrically and mechanically connecting a printed circuit board with a land part to a lead part of an electrical component by inserting the lead part into the connector part. The connector part composed of a line spring member having a fixed end part, a terminal fixing part, and an elastic deforming part. The fixed end part is fixed to the land part. The terminal fixing part formed by winding the line spring member elastically fastens the lead part. The elastic deforming part is elastically deformed when external force is applied to the lead part while maintaining the lead part fixed to the terminal fixing part.

Abstract: A metal wiring plate includes a soldering portion to which an electronic device is soldered and a wiring portion extending from the soldering portion and configured to electrically connect the electronic device to other device. The wiring portion includes a narrow portion located adjacent to the soldering portion. The width of the narrow portion is less than the width of the soldering portion so that the narrow portion helps prevent melted solder applied to the soldering portion from spreading to areas outside the soldering portion. The narrow portion allows the electronic apparatus to be surely soldered to the soldering portion without using solder resist.

Abstract: A thermoelectric generator comprising: at least a high-temperature heat source using a high-temperature fluid; at least a low-temperature heat source using a low-temperature fluid lower in temperature than the high-temperature fluid; and a plurality of thermoelectric elements arranged in parallel between the high-temperature heat source and the low-temperature heat source; wherein at least selected one of the high-temperature heat source and the low-temperature heat source is connected with a frame surrounding the plurality of thermoelectric elements.

Abstract: An electrode feeding apparatus for electric-discharge machining by discharging between an electrode and a workpiece in order to machine the workpiece includes an occurrence frequency detecting unit for detecting the occurrence frequency of short-circuit current flowing when the electrode contacts the workpiece and a penetration detecting unit for detecting penetration by the electrode to the workpiece based on the occurrence frequency. According to the present invention, it is possible to detect with high precision penetration by the electrode into the workpiece by utilizing the difference between an occurrence frequency of short-circuit current during electrode discharge machine and the occurrence frequency of the short-circuit current when the electrode has penetrated the workpiece.