Patent ID: 7646576

Claim:
An apparatus for transient blocking comprising a transient blocking unit having at least one depletion mode n-channel 3-terminal network interconnected with at least one depletion mode p-channel 3-terminal network such that a transient alters a bias voltage V p of said depletion mode p-channel 3-terminal network and a bias voltage V n of said depletion mode n-channel 3-terminal network, whereby said depletion mode p-channel 3-terminal network and said depletion mode n-channel 3-terminal network mutually switch off to block said transient, and wherein at least one of said at least one depletion mode n-channel 3-terminal network and said at least one depletion mode p-channel 3-terminal network comprises a set of two or more low-voltage depletion mode field effect transistors connected in source-to-drain series.