マイクロコンピュータを用いた電気炉温度調節器の製作

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  • THE MANUFACTURING PROCESS OF THERMOSTATIC CONTROLLER FOR FURNACE USING MICRO PROCESSING UNIT
  • マイクロコンピュータ オ モチイタ デンキロ オンド チョウセツキ ノ セイサ

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We are making blue electroluminescent diodes for single-crystalline substrates which has been grown by chemical transport technique using the powder of ZnS, ZnSe, ZnS_xSe_<1-x>, etc. The temperature of the electric furnance has been controlled by the mechanical thermostatic controller because the above technique requires high temperature about 800°C-1000°C. However, the mechanical thermostatic controller has many disadvantages, i.e. its function is very much limited and during operation a man is needed to operate this controller. Now to avoid these disadvantages and to get better control in making of blue electroluminescent diodes, we have manufactured an electrical thermostatic controller using a micro processing unit. This has several advantages over the mechanical one, i.e. its function is not limited, from the begining to the end, according to the desired program, the temperature will be automatically controlled and it has got same stability as the mechanical one.

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