Patent ID: 8653822

Claim:
A chopperless ambient field apparatus, comprising: a stationary first metallic sensing plate; a stationary second metallic sensing plate, vertically displaced from and substantially parallel to the first plate; a transistor-based device having first, second and third terminals; a first signal line coupled to the first plate and the first terminal of the transistor-based device; a second signal line coupled to the second plate and the second terminal of the transistor-based device; a relay circuit coupled to the first and second signal lines; an electrical parameter detector coupled to the second and third terminals of the transistor-based device; a protective enclosure disposed about the first and second plates, the transistor-based device, and the electrical parameter detector; and a closed electric field enclosure disposed about the protective enclosure having a first openable aperture above the first plate and a second openable aperture below the second plate, wherein with control of the apertures and relay, the detector measures AC fields and DC electric fields impinging on the plates.