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    • 9. 发明专利
    • AC/DC CONVERTER
    • JPH04169861A
    • 1992-06-17
    • JP29657490
    • 1990-11-01
    • AGENCY IND SCIENCE TECHN
    • YONEZAKI GENTASHINODA KATSUNORI
    • G01R19/03G01R17/22
    • PURPOSE:To enable decrease in an AC/DC difference by providing a temperature detector to detect a temperature of a heater in noncontact with the heater. CONSTITUTION:Main part of an AC/DC converter is made up of a heater (resistor) 21 and a coaxial external conductor 22 and a coaxial internal conductor 23 composes a cylindrical coaxial line together with the conductor 22. Connection between the conductor 23 and the heater 21 has a hetero metal contacting it and a Peltier effect is generated at the part to increase an AC/DC difference. A combination is set between the heater 21 and metal of the conductor 23 so as to reduce the effect. Then, a temperature detector 30 is formed on a substrate 31 by deposition of a thermocouple 34 comprising a number of different kinds of metals 32 and 33 and connected in series so that thermoelectromotive forces can be added. The detector 30 is mounted in several grooves 35 cut axially into the conductor 22 of the AC/DC converter so that the surface of a warm contact coincides with the internal surface of the conductor 22. Thus, non-contact arrangement of the detector 30 with the heater 21 can eliminates a factor for increasing the AC/DC difference in Thomson's effect, Peltier effect and the like.