| 摘要 |
PURPOSE: A device for adjusting sensitivity of a temperature measuring apparatus using a bolometer type infrared ray sensor is provided to reduce a size and a cost of products and to maintain amplified gain uniformly. CONSTITUTION: A device for adjusting sensitivity of the temperature measuring apparatus using the bolometer type infrared ray sensor includes a compensating sensor(Rc) and a detecting sensor(Rb) connected in series between a static voltage terminal and a ground terminal, sensing infrared ray amount and outputting first partial voltage, first and second resistances(R1,R2) connected in series between the static voltage terminal and the ground terminal, parallel to the compensating sensor and the detecting sensor and outputting second partial voltage, an amplifying part(OP1) for differently amplifying and outputting the first and second partial voltages, a third resistance(R3) applying the second partial voltage to an inverted terminal of the amplifying part, a fourth resistance(R4) for returning output of the amplifying part to the inverted terminal of the amplifying part, and a fifth resistance(R5) for returning output of the amplifying part to the non-inverted terminal of the amplifying part.
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