Multi-channel electrostatic sensor apparatus

Details Multi-channel electrostatic sensor apparatus Multi-channel electrostatic sensor apparatus

1991-02-04

1992-07-07

Wider, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324458, 331 55, 369129, G01R 2726

Patent

active

051286220

ABSTRACT:
Disclosed is a multi-channel electrostatic sensor apparatus including a main oscillation circuit; a plurality of pull-in type sub-oscillation circuits which are adapted to synchronize with the main oscillation circuit to generate sub-frequency signals whose frequency is equal to the main oscillation frequency or a multiple thereof; and a plurality of resonance circuits which are sensitive to any change in exterior capacitance when detected by an associated detector for changing its resonator resonance point with respect to the sub-frequency signal. Positive synchronization of the sub-oscillation circuits with the single main oscillation circuit prevents any adverse effect from being caused by the varying stray capacitance in flexible conductors connecting the sub-oscillation circuits to the main oscillation circuit while allowing the relatively free movement of the video heads of a video system, on which video heads the sub-oscillation circuits and subsequent components are attached.

REFERENCES:
patent: 4058766 (1987-11-01), Vogel et al.
patent: 4152641 (1979-05-01), Hughes et al.
patent: 4228393 (1980-10-01), Pile
patent: 4451780 (1984-05-01), Ogasawara
patent: 4528655 (1985-07-01), Tamura et al.
patent: 4675596 (1987-06-01), Smith
"Application of a Phase Locked Loop in the Transmitter of a New Generation VHF Mobile Radio" by F. P. VanEnk, et al. of Phillips TMC Radio Communication Division, published by IREE on Aug. 20, 1975.

Affiliated with

Also associated with

Rating

Multi-channel electrostatic sensor apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-channel electrostatic sensor apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-channel electrostatic sensor apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1832082