Circuit controlling system

Claim 1

A method for controlling an electric circuit including a field effect transistor, an electret and an induction electrode, comprising the steps of; coupling said induction electrode in an operable relationship to said field effect transistor; positioning said electret in spaced relation to said induction electrode such that said electret and induction electrode are electrostatically coupled, and selectively moving an electric field shielding plate into and out of the space between said electret and said induction electrodes to control the operating state of said field effect transistor.

Claim 2

A method for controlling an electric circuit including a field effect transistor, an electret and an induction electrode, comprising the steps of; coupling said induction electrode in an operable relationship to said field effect transistor; positioning said electret in spaced relation to said induction electrode such that said electret and induction electrode are electrostatically coupled, and selectively moving an electric field shielding plate into and out of the space between said electret and said induction electrodes to control the operating state of said field effect transistor.

Claim 3

A method for controlling an electric circuit including a field effect transistor, an electret and an induction electrode said induction electrode being comprised of a plurality of symmetrically arranged wing portions, a face of said electret coinciding with said induction electrode being covered with a conductive film of the same pattern as said induction electrode, comprising the steps of coupling said induction electrode in operable relation with said field effect transistor, positioning said electret in spaced relation to said induction electrode to electrostatically couple said electret to said induction electrode, continuously rotating said electret relative to said induction electrode to provide a continuously oscillating electric field therebetween to activate said field effect transistor at the frequency of rotation of said electret and modulating the intensity of said electric field by the movement of said induction electrode relative to said electret, whereby the operating state of said field effect transistor is controlled.

Claim 4

A method for controlling an electric circuit including a field effect transistor, an electret and an induction electrode said induction electrode being comprised of a plurality of symmetrically arranged wing portions, a face of said electret coinciding with said induction electrode being covered with a conductive film of the same pattern as said induction electrode, comprising the steps of coupling said induction electrode in operable relation with said field effect transistor, positioning said electret in spaced relation to said induction electrode to electrostatically couple said electret to said induction electrode, continuously rotating said electret relative to said induction electrode to provide a continuously oscillating electric field therebetween to activate said field effect transistor at the frequency of rotation of said electret and modulating the intensity of said electric field by the movement of said induction electrode relative to said electret, whereby the operating state of said field effect transistor is controlled.

Claim 7

A device for controlling the operating state of a field effect transistor comprising; an electret, an induction electrode spaced from said electret to generate an electric field therebetween, means for electrically connecting the gate and source electrodes of said field effect transistor to said induction electrode and said electret, and an electric field shielding electrode movably interposed in said space between said electret and said induction electrode, whereby said electric field is varied in accordance with movement of said electric field shielding electrode.

Claim 8

A device for controlling the operating state of a field effect transistor comprising; an electret, an induction electrode spaced from said electret to generate an electric field therebetween, means for electrically connecting the gate and source electrodes of said field effect transistor to said induction electrode and said electret, and an electric field shielding electrode movably interposed in said space between said electret and said induction electrode, whereby said electric field is varied in accordance with movement of said electric field shielding electrode.

Claim 10

A device for controlling the operating state of a field effect transistor comprising: an electret, an induction electrode spaced from said electret to generate an electric field therebetween, a casing for electrostatically shielding said electret and said induction electrode, said casing being provided with a window, means for electrically connecting the gate and source electrodes of said field effect transistor to said induction electrode and said electret, and a body facing said electret through said window to effect intensity modulation of said electric field.

Claim 11

A device for controlling the operating state of a field effect transistor comprising: an electret, an induction electrode spaced from said electret to generate an electric field therebetween, a casing for electrostatically shielding said electret and said induction electrode, said casing being provided with a window, means for electrically connecting the gate and source electrodes of said field effect transistor to said induction electrode and said electret, and a body facing said electret through said window to effect intensity modulation of said electric field.