| 摘要 |
PURPOSE:To prevent an AC waveform from distortion due to mixture of current between an AC circuit and a DC circuit and to supply stable AC to the DC circuit, by supplying AC from the AC side to an AC load through a capacitor. CONSTITUTION:The neutral points on the AC and DC sides of a rectifier element 4 are found by dividing resistors 7, 8 and resistors 9, 10, and respective neutral points are connected each other to supply AC to a humidity-sensitive element 1 in the DC circuit. The AC is supplied to the humidity-sensitive element 1 through the capacitor 23 to prevent the AC waveform from distortion due to the mixture of a DC component in the DC circuit with the AC side. Diodes 24, 25 for a clamp circuit clam the amplitude of the AC waveform appearing between resistors 21, 22 to generate fixed amplitude. |
