Abstract: A wiring error detection circuit for providing the status of the wiring of an AC outlet and the status of the AC outlet's ground connection.

Abstract: A meter-base surge protector adapted to be connected between multiple incoming power lines and a neutral line at a meter comprises first and second metal oxide varistors, which are each respectively connected in series to first and second thermal cut-offs and a gas discharge tube. The first and second thermal cut-offs are each connected to separate incoming power lines. The gas discharge tube is also connected to the incoming neutral line. The meter-base surge protector also includes a microcontroller for monitoring and detecting the voltage status at monitoring points within the circuit, or system, for detecting circuit, or system, malfunction. Upon the detection of a malfunction, the microcontroller activates a non-surge protection status indicator.

Abstract: A wiring error detection circuit for providing the status of the wiring of an AC outlet and the status of the AC outlet's ground connection.

Abstract: A surge protected broadband power line communication system is provided. The system includes a local module with a base unit and a remote module with an extension unit. Both modules include broadband surge suppressors adapted to be connected to an AC power line. The base and extension units are connected to the surge suppressors and transmit and receive broadband digital signals through the surge suppressors and over the AC power line. The local and remote modules also have RF isolator filters connected to the surge suppressors and surge protected AC outlets connected to the outputs of the isolator filters. The local module is connected to a source of broadband digital signals such as a cable modem. The system makes the cable modem available in every room in a home simply by plugging an extension unit into an outlet located in that room.

Abstract: A network interface device for Ethernet networks using unshielded twisted pair cables comprising an overvoltage protection module and an interconnection module connected to the overvoltage protection module, both modules being connected in series in the Ethernet network.

Abstract: A grounding module comprising a housing, an AC plug, a female outlet, a ground sensing-circuit for determining whether or not a ground is present when the AC plug is inserted into an AC outlet and an external ground connection for providing the ground to an electrical device.

Abstract: A system for protecting networks from overvoltage and overcurrent conditions.

Abstract: Power line surge protection device comprising AC power line overvoltage protection, telephone voice line overvoltage and overcurrent protection, high speed data line overvoltage and overcurrent protection, coaxial transmission line overvoltage protection, and a ground-sensing indicator, all tied to a common ground.

Abstract: An improved surge suppressor which combines a ground fault circuit interrupter with overvoltage protection for AC power lines. The surge suppressor includes a switchable device for disconnecting power from the ground fault circuit interrupter in the event the AC neutral is lost.

Abstract: An improved surge suppressor which combines a ground fault circuit interrupter with overvoltage protection for AC power lines. The surge suppressor includes a switchable device for disconnecting power from the ground fault circuit interrupter in the event the AC neutral is lost.

Abstract: A surge suppressor which provides overvoltage protection for AC power lines, coaxial transmission lines and communication lines using a virtual ground rather than a separate ground conductor.

Abstract: Surge suppressor apparatus comprising AC power line overvoltage protection, telephone voice line overvoltage and overcurrent protection, high speed data line overvoltage and overcurrent protection and coaxial transmission line overvoltage protection, all tied to a common ground.

Abstract: Combination ground fault circuit interrupter/surge suppressor which provides overvoltage protection for AC power lines, coaxial transmission lines and communication lines without a separate ground conductor.

Abstract: Surge suppressor apparatus comprising AC power line overvoltage protection, telephone voice line overvoltage and overcurrent protection, high speed data line overvoltage and overcurrent protection and coaxial transmission line overvoltage protection, all tied to a common ground.

Abstract: Residential protection service center apparatus comprising AC power line overvoltage protection, telephone voice line overvoltage and overcurrent protection, high speed data line overvoltage and overcurrent protection and coaxial transmission line overvoltage protection, all tied to a common ground.

Abstract: Residential protection service center apparatus comprising an AC power meter, AC power line surge suppression, telephone line overvoltage protection and coaxial transmission line overvoltage protection, all tied to a common ground.

Abstract: Residential protection service center apparatus comprising an AC power meter, AC power line surge suppression, telephone line overvoltage protection and coaxial transmission line overvoltage protection, all tied to a common ground.

Abstract: A customer bridge module for connecting telephone company wiring and subscriber telephone wiring in a telephone network interface apparatus, the customer bridge module having a plug-actuated switchable socket and an overcurrent protection circuit, a half-ringer, a maintenance termination unit or a radio frequency interference (RFI) filter.

Abstract: An overvoltage/overcurrent protection system for Ethernet networks using unshielded twisted pair cabling, the system comprising two overvoltage/overcurrent protection circuits, one circuit for the twisted pair carrying incoming digital signals and one circuit for the twisted pair carrying outgoing digital signals.

Abstract: Combination coaxial surge arrestor and power extraction apparatus for providing overvoltage protection for a coaxial transmission line carrying both an RF signal and AC power and for extracting AC power from the coaxial transmission line. The surge arrestor comprises a coaxial gas discharge tube with a center conductor and a conductive body. The apparatus includes an inductor for extracting the AC power, the inductor having a high reactance at the frequency of the RF signal and a low reactance at the frequency of the AC power, and a capacitor for passing the RF signal, the capacitor having a low reactance at the frequency of the RF signal and a high reactance at the frequency of the AC power.