465 results about "Hotline" patented technology

Parties are automatically notified mounting a controller and a peer-to-peer short-range wireless communicator on a vehicle; responsive to a vehicle urgency, pinging by the short-range communicator a long-range communication device within peer-to-peer range, the long-range device being capable of delivering a notification to a party via a wireless network which has a longer range than the peer-to-peer range, and being physically detached from the vehicle; receiving a message indicating that user authorization is required; sending a request for authorization; receiving temporary authorization to co-opt the long-range communications device to deliver the emergency notification message via the wireless network; and sending the emergency notification message from the short-range wireless communicator through the co-opted long- range communication device first over the peer-to-peer communications and second over the wireless network, to a hotline service.

An arrangement (900) and method (1000) for providing power line communication from an AC power source (910) to a circuit (900) for supplying power to a load (960), as well as electronic ballasts (20,30,40,70,80) that operate according to the method (1000). Method (1000) includes the steps of: providing (1010) an AC power source (910) that includes hot, neutral, and ground wires (10,12,14) and a control station (914) for generating a power line carrier control signal; providing (1020) a power supply circuit (920) having an EMI filter (930), power processing circuitry (940), and a power line communication (PLC) circuit (950); setting (1030) a fundamental frequency of the power line carrier control signal to be about equal to either an effective common-mode resonant frequency of the EMI filter (930) or a harmonic thereof; injecting (1040) a power line carrier control signal between the neutral and ground wires (12,14) of the AC power source (910); detecting (1050) the power line carrier control signal by monitoring a current flowing from the ground wire (14) to a circuit ground (90); and directing (1060) the power processing circuitry (940) to control load power in dependence on the detected power line carrier control signal. Specific preferred embodiments are directed to electronic ballasts (20,30,40,70,80) that include various PLC circuits (300,400,500,700).

A self-contained unit intended primarily for tracing the circuit connection between an electrical outlet or lighting receptacle and its corresponding circuit-breaker. The preferred embodiment includes a housing, a male three prong electrical plug, a sound-producing means, a first momentary switch which permits testing of a ground fault interrupt across either a hot wire and a neutral, or across a hot wire and the ground; and a second momentary switch which permits testing of reverse polarity by testing across a neutral and the ground. An alternate embodiment incorporates a single 3-way switch. Adapters are used to temporarily adapt bare wires or a lighting receptacle to a female plug so that the device may be used.