A resistor-capacitor (RC) sensor circuit of an electronic device is driven to a drive voltage using a representative copy of a current that drives an electronic circuit line of the electronic device. The RC sensor circuit is to sample voltages that are indicative of an RC time constant of the electronic circuit line. A first sample voltage is determined by sampling a first representative voltage generated at the RC sensor circuit by driving the RC sensor circuit with the representative copy of the current over a first time period. A second sample voltage is determined by sampling a second representative voltage generated at the RC sensor circuit by driving the RC sensor circuit with the representative copy of the current over a second time period. A ratio of the first sample voltage and the second sample voltage is indicative of the RC time constant of the electronic circuit line.

A resistor-capacitor (RC) sensor circuit of an electronic device is driven to a drive voltage using a representative copy of a current that drives an electronic circuit line of the electronic device. The RC sensor circuit is to sample voltages that are indicative of an RC time constant of the electronic circuit line. A first sample voltage is determined by sampling a first representative voltage generated at the RC sensor circuit by driving the RC sensor circuit with the representative copy of the current over a first time period. A second sample voltage is determined by sampling a second representative voltage generated at the RC sensor circuit by driving the RC sensor circuit with the representative copy of the current over a second time period. A ratio of the first sample voltage and the second sample voltage is indicative of the RC time constant of the electronic circuit line.

A fire alarm communication device having a first and second output voltage which are constant during normal operation of the fire alarm communicator. During a trouble condition of the fire alarm communicator, one of the output voltages is manipulated

A short-circuit isolator for electrically isolating a short circuit in a fire protection system includes a wireless communication module. The wireless communication module may transmit a status of short-circuit isolator and/or additional data that can be detected by a tool carried by an operator. The wireless communication module may additionally allow the operator to locate the short-circuit isolator, based on an intensity of a wireless signal from the wireless communication module.

A method for testing a network connection of an emergency response system at least including a remote device and a central station includes: receiving, by the remote device, a user's instruction or an automatically triggered event for initiating a test of the network connection between the remote device and the central station; in response to the user's instruction or the automatically triggered event, sending, by the remote device, a first test signal to the central station; receiving, by the remote device, a first response signal sent from the central station for acknowledging the first test signal; and in response to receiving no first response signal from the central station for acknowledging the first test signal, alerting, by the remote device, a user of the remote device about a failure of the network connection.

A method for testing a network connection of an emergency response system at least including a remote device and a central station includes: receiving, by the remote device, a user's instruction or an automatically triggered event for initiating a test of the network connection between the remote device and the central station; in response to the user's instruction or the automatically triggered event, sending, by the remote device, a first test signal to the central station; receiving, by the remote device, a first response signal sent from the central station for acknowledging the first test signal; and in response to receiving no first response signal from the central station for acknowledging the first test signal, alerting, by the remote device, a user of the remote device about a failure of the network connection.

A method for partial discharge recognition in high voltage applications and a high voltage unit using the method, includes the steps of detecting a signal, transforming the signal from time to frequency domain, cutting frequencies above a defined threshold, and retransform the truncated signal from frequency to time domain. The information content of detected and truncated signals is determined and compared.

A method for partial discharge recognition in high voltage applications and a high voltage unit using the method, includes the steps of detecting a signal, transforming the signal from time to frequency domain, cutting frequencies above a defined threshold, and retransform the truncated signal from frequency to time domain. The information content of detected and truncated signals is determined and compared.

A system for monitoring the integrity of a plurality of ground conductors has a plurality of monitors, with a different monitor associated with each ground conductor. Each monitor includes a voltage sensor which monitors voltage on a closed circuit of the monitor. Upon the voltage sensor sensing an unexpected voltage, a transmitter of the monitor issues an “alarm” signal, which may be wireless (e.g., being sent using LoRaWAN protocol). The transmitter may issue other signals, including a periodic “heartbeat” signal to confirm continued operation of the monitor, and a “movement” signal to indicate movement of the monitor. The monitor may be GPS-enabled, in which case each signal may include the GPS coordinates of the monitor. The signals issued by the transmitter may ultimately be analyzed by an operator via a user interface platform, which may simultaneously display information regarding two or more of the plurality of monitors.

A system for monitoring the integrity of a plurality of ground conductors has a plurality of monitors, with a different monitor associated with each ground conductor. Each monitor includes a voltage sensor which monitors voltage on a closed circuit of the monitor. Upon the voltage sensor sensing an unexpected voltage, a transmitter of the monitor issues an “alarm” signal, which may be wireless (e.g., being sent using LoRaWAN protocol). The transmitter may issue other signals, including a periodic “heartbeat” signal to confirm continued operation of the monitor, and a “movement” signal to indicate movement of the monitor. The monitor may be GPS-enabled, in which case each signal may include the GPS coordinates of the monitor. The signals issued by the transmitter may ultimately be analyzed by an operator via a user interface platform, which may simultaneously display information regarding two or more of the plurality of monitors.