| 摘要 |
<p>PURPOSE:To facilitate the connection job by providing two terminals connecting each terminal of a switch element to an external line and connecting each terminal of a series circuit comprising a power supply and a load to each terminal respectively. CONSTITUTION:An input terminal of a stabilizing power supply circuit section 4 is connected to both terminals T1, T2. That is, a thermosensor 1 comprising a pyroelectric element or the like senses a heat ray radiating from a human body and when the heat ray is sensed by the thermosensor 1, a control circuit 2 generates a control signal. A signal processing section 2a of the control circuit 2 amplifies and waveform-shapes an output signal of the thermosensor 1 and selects whether an output of the thermosensor 1 validates or invalidates in response to the surrounding illuminance detected by an illuminance sensor 5. In this case, the series circuit comprising a power supply E and a load L is connected between the terminals T1, T2, since the switch element 3 is inserted to the series circuit, the load L is switched depending on the ON/OFF state of the switch element 3.</p> |
