| 摘要 |
<p>A pyroelectric device includes a pyroelectric member (1) for detecting infrared radiation, a transistor (2) whose gate electrode is connected to one of terminals of the pyroelectric member, a drain terminal (4) connected to a drain electrode of the transistor, a source terminal (5) connected to a source electrode of the transistor, a grounding terminal (6) connected to the other terminal of the pyroelectric member, and a gate resistor (3) connected between the terminals of the pyroelectric member. The gate resistor (3) used in a pyroelectric device for a fire detection has a resistance ranging from 5 to 90 giga ohms, and the gate resistor used in a pyroelectric device for an intrusion detection has a resistance equal to or less than 30 giga ohms. <IMAGE></p> |
