Class / Patent application number | Description | Number of patent applications / Date published |
361930400 | Automatic reset after trip | 6 |
20110085274 | CIRCUIT BREAKER - An electronic circuit breaker including a two stage detection mechanism; an instantaneous trip operating at a first threshold and a delayed trip such operating at a second lower threshold. This is advantageous in maintaining operation during very short transient load peaks, which do not warrant isolation from the supply. The breaker can be line powered, can be reset remotely by controlling the line power, and can be implemented entirely in solid state electronics. As such it requires little or no service or maintenance. | 04-14-2011 |
20120019971 | Controller Circuit Including a Switch Mode Power Converter and Automatic Recloser Using the Same - An autorecloser circuit including a relay circuit with an electromagnetic relay configured to be coupled between an AC power source and a customer location to deliver current from the AC power source to the customer location. A controller coupled to the relay circuit is configured to control the electromagnetic. A current sense circuit coupled to the controller is configured to detect an amount of the current that is delivered to the customer location and a reference voltage circuit coupled to the controller is configured to establish a reference level for the amount of the current that is delivered to the customer location. A power circuit coupled to the controller and to the relay circuit is configured to provide a DC power source to the controller and to the relay circuit from the AC power source. The controller is configured to disconnect or reconnect the AC power source from the customer location based on the detected amount of current. | 01-26-2012 |
20120268852 | SYSTEMS AND METHODS FOR TESTABLE CURRENT LIMITING WITH HICCUP RESET - Testable current limiting with hiccup reset is provided. In one embodiment, a current limiter comprises: a current regulating circuit having a pass-transistor wherein a load current delivered to a load side flows through the pass-transistor, the current regulating circuit clamps the load current when the load current exceeds a threshold; a latch regulating circuit coupled to the current regulating circuit, and further coupled to a line side through a semiconductor having a turn-on voltage threshold higher than the pass-transistor; and a current limit test circuit configured to apply a reference impedance to the load side output. The latch regulating circuit compares a voltage from the current regulating circuit to a voltage measured at the semiconductor to determine when the load current exceeds the threshold. When the load current exceeds the threshold for a period of time exceeding a predetermined duration, the latch regulating circuit temporarily shuts off the pass-transistor. | 10-25-2012 |
20120327547 | Surge Protection - An electronic fuse ( | 12-27-2012 |
20140111899 | PROTECTING CIRCUIT - A protecting circuit connected between a power supply and a load includes an interface unit, a switching unit, a protection module, a locking unit, and a trigger unit. The interface unit is used for connecting to the load. The switching unit turns on to establish a connection between the power supply and the load when the interface connects to the load and turns off to cut off the connection. The protection module generates a protecting signal when the output of the power supply is in an abnormal state, and the locking unit controls the trigger unit to generate a control signal. The switching unit cuts off the connection in response to the control signal. When the output of the power supply resumes to a normal state, the switching unit automatically resumes the connection by reconnecting the interface with the load. | 04-24-2014 |
20150318274 | DEVICE INPUT PROTECTION CIRCUIT - An input protection circuit for protecting components of an input circuit. The input protection circuit includes a resettable fuse that functions as a current limit integrated circuit to maintain a maximum current so that the circuit can function in a normal operating range with less current. A Zener diode can measure the circuit's voltage and control a metal oxide semiconductor field-effect transistor (MOSEFT) to avoid impact with the analog signal input. The MOSEFT is open if a voltage input is less than a Zener diode breakdown voltage. The Zener diode breakdowns the current flow directly into a ground via the MOSEFT if the voltage input is higher than the Zener diode breakdown voltage. The resettable fuse will shut down until the resettable fuse is reset if the current is higher than the resettable fuse trip current. The protect circuit restarts after the resettable fuse is reset. | 11-05-2015 |