| 摘要 |
PURPOSE:To always enable accurate detection to be performed even with an inexpensive amplifier having scattering by connecting a second coupling capacitor between an ideal diode and an inversion amplifier, with the capacity sufficiently larger than the first coupling capacitor composing the ideal diode. CONSTITUTION:A first coupling capacitor C1 is connected to a terminal 1 and an ideal diode comprising an amplifier A1 and a diode D is connected thereto C1. Then, a resistance R1 with one end thereof grounded is connected to the ideal diode while a second coupling capacitor C2 with the capacity sufficiently larger than the first coupling capacitor C1 is connected thereto. An inversion amplifier comprising an amplifier A2 and resistances Rf and Ri is connected to the second coupling capacitor C2 through the resistance Ri. A terminal 2 is connected to the inversion amplifier to transmit a signal of this moving object detection circuit to a detection signal processing section. |
