Patent ID: 7046050

Claim:
An electrical circuit having an input signal for driving the gate of an NFET with a base to create a high side switch comprising: a source voltage passageway adapted to receive the input signal and electrically connected to the NFET; a local positive voltage passageway electrically connected to the NFET; a power source electrically connected to the NFET providing a positive voltage source to the NFET; a diode electrically connected between the source voltage passageway and the local positive voltage passageway to clamp the local voltage passageway with respect to the source voltage passageway; wherein the source voltage passageway consists of a first transistor having a threshold voltage and adapted to receive the input signal; and a second transistor electrically connected to the first transistor such that when the threshold voltage of the first transistor is not supplied the second transistor will deactivate; said second transistor being electrically connected to the base of the NFET.