| 摘要 |
PURPOSE:To make it possible to measure ascending and descending of temperature without requiring past data memory and operation process, by detecting with a bridge circuit difference in response to temperature of two conductors having respectively different sectional areas. CONSTITUTION:A bridge circuit is composed of first and second conductors 1 and 2 and also of fixed resistors 21 and 22. When hot air hit the first and second conductors 1 and 2, an output is brought about from the bridge circuit because the small-diameter first copper wire 1 has quick response and the large-diameter second copper wire 2 has slow response, and the output is led to an output terminal 24 through an amplifier 23. It is possible to detect temperature variation by detecting variation of this output. |
