Method for improving EMC of keyboard soft board

Details Method for improving EMC of keyboard soft board Method for improving EMC of keyboard soft board

2005-08-23

2005-08-23

Arbes, Carl J. (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S825000, C029S842000, C029S846000

Reexamination Certificate

active

06931721

ABSTRACT:
A method for improving the EMI compatibility of the keyboard soft board is disclosed. A low-pass filter is installed on the scan lines of the keyboard soft board to remove high-frequency noise signals produced by the soft board circuit, achieving the EMC requirement. The low-pass filter is formed between the input terminal of the scan line and the touch pad. An inductance is selectively installed and between the touch pads. A capacitance is formed between the touch pad of the scan line and a ground network. The method of forming the capacitance is to form ground pads on the ground network corresponding the scan line touch pads. The method of forming the inductance may be achieved through a reversed U-shaped inductor.

REFERENCES:
patent: 0778683 (1997-06-01), None

Affiliated with

Also associated with

Rating

Method for improving EMC of keyboard soft board does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for improving EMC of keyboard soft board, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for improving EMC of keyboard soft board will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3496090