A switching regulator with constant on time control adopts a timer to time when the system is in discontinuous current mode (DCM). If the DCM lasted for a set time, a power stage in the switching regulator is controlled to be ON for a minimum on time duration, so as to ensure the switching regulator enters sleep mode.

A switching regulator with constant on time control adopts a timer to time when the system is in discontinuous current mode (DCM). If the DCM lasted for a set time, a power stage in the switching regulator is controlled to be ON for a minimum on time duration, so as to ensure the switching regulator enters sleep mode.

A high voltage phasing voltmeter comprises first and second probes. Each probe comprises an electrode for contacting a high voltage electrical conductor. The electrodes are connected in series with a resistor. A meter comprises a housing enclosing an electrical circuit for measuring true rms voltage. The electrical circuit comprises an input circuit for connection to the first and second probes and developing a scaled voltage representing measured voltage across the electrodes. A converter circuit converts the scaled voltage to a DC signal representing true rms value of the measured voltage. A peak hold circuit is connected to the converter circuit to hold a peak value of the true rms value. A display is connected to the peak hold circuit for displaying the peak value of the true rms value.

A waveform shape discriminator includes a running maximum finder circuit coupled to receive a sense signal. The running maximum finder circuit is coupled to update a running maximum signal in response to the sense signal. A first comparator is coupled to receive the sense signal and a running maximum threshold signal that is representative of the running maximum signal. A search window block is coupled to receive the input signal to detect a search window in the sense signal. An output circuit is coupled to an output of the first comparator and an output of the search window block to determine a presence of a waveform shape in the sense signal within the search window in the sense signal.

A waveform shape discriminator includes a running maximum finder circuit coupled to receive a sense signal. The running maximum finder circuit is coupled to update a running maximum signal in response to the sense signal. A first comparator is coupled to receive the sense signal and a running maximum threshold signal that is representative of the running maximum signal. A search window block is coupled to receive the input signal to detect a search window in the sense signal. An output circuit is coupled to an output of the first comparator and an output of the search window block to determine a presence of a waveform shape in the sense signal within the search window in the sense signal.

A device, includes: a ring waveguide; a diode comprising a junction extending at least partly in the ring waveguide; and a first circuit configured to supply a signal representative of a leakage current in the diode.

A device, includes: a ring waveguide; a diode comprising a junction extending at least partly in the ring waveguide; and a first circuit configured to supply a signal representative of a leakage current in the diode.

Herein disclosed is an error warning module, installed in an electronic device, comprising a detection unit and a processing unit. The detection unit detects a current or a voltage being transmitted by the electronic device to generate a current detection signal or a voltage detection signal. The processing unit, electrically connected to the detection unit, determines whether a current detection value indicated by the current detection signal exceeds a current setting range, or whether a voltage detection value indicated by the voltage detection signal exceeds a voltage setting range. When the current detection value exceeds the current setting range or the voltage detection value exceeds the voltage setting range, the processing unit generates a warning signal.

The present disclosure relates to an overcurrent protection inverter, and more particularly, to an inverter, which uses a leg-shunt resistor so as to detect an instantaneous maximum output current and an AD current, thereby performing an inverter protection operation. The present disclosure detects the instantaneous maximum output current and detects the AD current from the leg-shunt resistor so as to perform an overcurrent protection operation when an overcurrent occurs in the entire inverter operation section, thereby enabling protection of the inverter.

An output circuit includes: an inductor, an amplifier circuit that outputs an output signal via the inductor, an output terminal that outputs the output signal to an outside, a voltage divider circuit including a series circuit constituted by a first capacitive element and a second capacitive element connected in series to the first capacitive element, the series circuit generating a first voltage-divided signal by dividing a voltage of the output signal, a first band-adjusting element having a resistance component for generating a first band-adjusted signal by adjusting frequency characteristics of the first voltage-divided signal, and a first peak detection circuit that detects a peak voltage of the first band-adjusted signal and output a first peak voltage in accordance with the detected peak voltage.