Patent
Overcurrent protection device.
TLDR
A circuit protection arrangement that is intended to be series connected in a line of the circuit comprises a transistor switch (1) that controls the line current and a control transistor (4) that controlled the base or gate voltage of the switching transistor and is responsive to an overcurrent through the switch.Abstract:
A circuit protection arrangement that is intended to be series connected in a line of the circuit comprises a transistor switch (1) that controls the line current and a control transistor (4) that controls the base or gate voltage of the switching transistor and is responsive to an overcurrent through the switching transistor. The arrangement includes a voltage source, for example a battery (3), a dc-dc converter (58/59) or a Seebeck device (43), applied to the base or gate of the switching transistor which biases the switching transistor into or toward conduction in normal operation. The arrangement enables the initial voltage drop that is required to turn the switching transistor (1) on to be reduced or eliminated while requiring relatively little current from the voltage source. The arrangement can be reset remotely by briefly removing the voltage source or load from the circuit.read more
Citations
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Patent
Circuit protection arrangement.
TL;DR: A circuit protection arrangement comprises a series switching circuit that is intended to be connected in a line of the circuit and will switch to an open state when subjected to an overcurrent, and a shunt switching circuit which is open under normal operating conditions but will shunt the overcurrent across the load of a circuit or to ground when triggered by the series switch circuit as mentioned in this paper.
Patent
Circuit configuration having a semiconductor switch and a protection circuit
TL;DR: In this paper, a circuit configuration has a first semiconductor switch and a first protection circuit, and the second switch is switched on by a comparator circuit, in each case for a predefined time period, in dependence on a comparison between a load path voltage and a reference voltage, or between the load path current and the reference current.
Patent
Battery over-discharge protection
TL;DR: In this article, an over-discharge over-current preventing circuit with a PTC element and an FET was proposed, in which the PTC prevented overcurrent by stopping the supply of current to the external terminal when the current between the electrode members exceeds a predetermined value, thereby also protecting the FET from being destroyed by an overcurrent.
Patent
Apparatus and method for enhanced transient blocking
TL;DR: In this paper, an apparatus and method for enhanced transient blocking employing a transient blocking unit (TBU) that uses at least one depletion mode n-channel device interconnected with at least two depletion mode p-channel devices is presented.
Patent
Transient blocking apparatus with reset
TL;DR: In this article, the depletion mode n-channel and depletion mode p-channel devices mutually switch off to block the transient in order to determine whether the transient persists, and the sampling circuit uses a disconnect element for permanently blocking the transient.
References
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Patent
Circuit protection arrangement.
TL;DR: A circuit protection arrangement comprises a series switching circuit that is intended to be connected in a line of the circuit and will switch to an open state when subjected to an overcurrent, and a shunt switching circuit which is open under normal operating conditions but will shunt the overcurrent across the load of a circuit or to ground when triggered by the series switch circuit as mentioned in this paper.
Patent
Series current limiter
TL;DR: The field effect transistors are depletion type transistors and are interconnected in a manner to decrease conduction when an overvoltage or overcurrent condition is sensed as discussed by the authors, and bias resistors are used to maintain the transistors in a non-conductive state.
Patent
Semiconductor device protection circuit
TL;DR: In this article, the reference limit signal (Vthis article) is used to measure the current sense signal of an FET and a control circuit (20, 32) reduces current (power dissipation) in the FET.
Patent
Power driver having short circuit protection
Stefan Lorincz,Jeffrey J. Braun +1 more
TL;DR: In this paper, a power driver having a power transistor (15) uses a disable unit (17) to disable the transistor(15) upon sensing a short-circuit condition.
Patent
Inrush current limiter
TL;DR: An inrush current limiter includes at least a two-terminal circuit in series with a power load having a high gain high current Darlington transistor, a driver transistor for the high-gain high current DARlington transistor and a current sensing resistor, a base-drive resistor, and a diode bridge interfaced for providing a peak-current-limiting function by proportional adjustment of the voltage to the power load as a function of current.