Circuit for diverting surges and transient impulses
AssigneePolyPhaser Corporation
InventorRoger Bishop
Life of this patent
Estimating the term…
Abstract
A circuit for attenuating a surge is disclosed that might include a conductor for receiving the surge, a capacitor, positioned along the conductor, for blocking the surge, and a gas tube having a first end coupled to the conductor and a second end coupled to a ground. The circuit might also include a transformer having a first wire and a second wire, the transformer being coupled to the conductor, a resistor coupled to the first and second wires of the transformer, a varistor coupled to the first wire of the transformer, and a diode coupled to the second wire of the transformer.
Claims20
A circuit for attenuating a surge comprising:
- an input conductor for receiving a signal and a surge induced overcurrent;
- an output conductor for receiving the signal;
- a capacitor, connected between the input and output conductors, for blocking the surge;
- a gas tube having a first end connected to the input conductor and a second end connected to a ground;
- a transformer in parallel with the capacitor, the transformer having a core and first and second wires wound around the core, the first wire of the transformer connected to the input conductor, the second wire of the transformer connected to the output conductor and the core saturating when the surge induced overcurrent reaches the first wire;
- and
- a resistor connecting the first and second wires of the transformer.
A surge suppression circuit having an input conductor for coupling to a signal line and an output conductor for coupling to equipment to be protected, the circuit comprising:
- a capacitor having a first conductor connected to the input conductor and a second conductor connected to the output conductor;
- and
- a transformer having a primary winding connected to the first conductor of the capacitor and a secondary winding connected to the second conductor of the capacitor.
A circuit for attenuating transient impulses comprising:
- an input port configured to receive a signal and a transient impulse having a leading portion and a trailing portion;
- a gas tube directly connected to the input port and configured to divert the trailing portion of the transient impulse to ground;
- a capacitor directly connected to the input port and configured to pass the signal and block the leading portion of the transient impulse;
- a transformer directly connected to the input port and configured to pass the signal and the leading portion of the transient impulse;
- and
- a varistor directly connected to the transformer and configured to divert a part of the leading portion of the transient impulse to ground.
Dependencies are inferred from the claim text.