Patent ID: 7068487

Claim:
A surge protector for an alternating current service, said service including at least an incoming hot line and an incoming neutral line, which comprises: (a.) a series connected transformer with input connection means for connection to said incoming hot line, and connected in series to a non-linear surge suppression circuit, and therefore having a gross output connection to said non linear surge suppression circuit, and further having a low impedance signal input to the secondary of the series connected transformer from said non-linear surge suppression circuit, and having a surge cancelled hot line output connection means; and, (b.) said non-linear surge suppression circuit having an input connection means from said neutral line, and being connected with said gross output connection means of said transformer, and having means for returning a suppressed surge signal to said transformer secondary, or tap and having a neutral line output connection means; wherein the non-linear surge suppression circuit limits the surge voltage at a voltage above the peak of the power wave voltage, and the series connected transformer senses the surge current and the transformer secondary supplies a signal of opposite phase to the incoming surge at the output after the clamping circuit, which effectively cancels the residual surge voltage, rendering the residual surge benign at the output.