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Capacitive Touch Control Glass
• A parallel plate capacitor has 2 conductors separated by a dielectric
layer & energy is concentrated between the plates.
• Some energy spills over & is called “fringing electric fields” & when a
finger is placed near a “fringing electric field”, it increases the charge
finger is placed near a fringing electric field , it increases the charge
storage capacity of the plate capacitor.
• This increase is read by the main board & will then activate a circuit.
• A finger can be sensed because is can hold a charge, & this occurs
if the finger is floating or grounded.
GE 240V Advantium Wall Oven
(7/22/08)
GE CONFIDENTIAL & PROPREITARY INFORMATION - NOT FOR PUBLIC DISCLOSURE
Copyright 2008 General Electric Company – 12/9/2009
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GE imagination at work