Low-power-consumption current limiting module
A current-limiting, low-power technology, applied in the field of low-power current-limiting modules, can solve problems such as easy burning resistance and power consumption
Inactive Publication Date: 2017-06-30
肖伟
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Problems solved by technology
[0004] The current current limiting scheme is to connect a current limiting resistor in series in the circuit, and detect the magnitude of the current by detecting the voltage on the current limiting resistor in real time. This method is fine for small currents, but for large currents, the current limiting resistor It generates a lot of heat, it is very easy to burn the resistor, and it also consumes a lot of power
Method used
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Embodiment Construction
[0008] The low power consumption current limiting module of the present invention includes a current detection loop, a voltage comparator, a filter circuit, an amplification circuit, and an output interface.
[0009] The current detection loop is connected to the wire to detect the current, the filter circuit filters out the interference signal, and the current magnitude signal is input to the amplification circuit, the amplification circuit amplifies the circuit magnitude signal, and compares it with the preset voltage in the voltage comparator Operation, if the voltage is greater than the preset value, the circuit break signal will be output through the output interface, so that the circuit can detect the magnitude of the current and play the role of current limitation, and will not digest a large amount of electric energy and heat generated by the current.
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The invention discloses a low-power-consumption current limiting module. The low-power-consumption current limiting module comprises a current detection ring, a voltage comparator, a filter circuit, an amplification circuit and an output interface. The current detection ring is connected with a wire with the current to be detected, the filter circuit filters interference signals and inputs a current magnitude signal into the amplification circuit, the amplification circuit amplifies a circuit magnitude signal, comparison operation is carried out on the amplified circuit magnitude signal and the preset voltage in the voltage comparator, if the voltage is greater than a preset value, a broken circuit signal is output through the output interface, the circuit detects the magnitude of the current, and the low-power-consumption current limiting module has a current limiting effect, and a lot of electric energy and heat of generating current are not consumed.
Description
technical field [0001] The invention relates to a current limiting module, in particular to a low power consumption current limiting module. Background technique [0002] Current and voltage are common parameters of circuits, and circuits are the basic factors of many electronic components. [0003] However, when the current is too large, the components in the circuit will be damaged, so it is very necessary to limit the current in the circuit. The current limit can cut off the circuit before the current reaches the level of damaging the electronic components, so that the electronic components will not be damaged. current damage. [0004] The current current limiting scheme is to connect a current limiting resistor in series in the circuit, and detect the magnitude of the current by detecting the voltage on the current limiting resistor in real time. This method is fine for small currents, but for large currents, the current limiting resistor A lot of heat is generated on ...
Claims
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IPC IPC(8): H02H9/02
CPCH02H9/021
Inventor 不公告发明人
Owner 肖伟