Battery powered overvoltage and undervoltage locking and 28V-voltage stabilization protection circuit

An over-voltage and under-voltage protection technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of unstable battery supply voltage and current discharge, and achieve constant output voltage, easy implementation, and simple circuit. safe effect
CN104037883AInactive Publication Date: 2014-09-10CHINA UNIV OF GEOSCIENCES (WUHAN)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (WUHAN)
Publication Date
2014-09-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a battery powered overvoltage and undervoltage locking and 28V-voltage stabilization protection circuit, belongs to the field of battery power sources and is applicable to detection fields of industrial site like power supplying of a pre-amplifier. The battery powered overvoltage and undervoltage locking and 28V stable voltage protection circuit comprises a 28V power source, an overvoltage locking unit, a undervoltage locking unit and a voltage stabilization protecting unit, wherein an overvoltage locking is used for a voltage clamp level when battery powered voltage is too high; the battery undervoltage locking unit is used for a voltage clamp level when the battery powered voltage is too low; the voltage stabilization protection circuit is used for stabilizing voltage after the voltage is locked, eliminating voltage change caused by load change and provided with a circuit protection function. The battery powered overvoltage and undervoltage locking and 28V-voltage stabilization protection circuit has the advantages that voltage locking of battery-powered overvoltage and undervoltage can be achieved, and the voltage can be stabilized via the 28V-voltage stabilization protection module.
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Description

technical field

[0001] The invention relates to the field of battery power supply for industrial detection, in particular to a battery-powered overvoltage and undervoltage lockout and 28V voltage stabilization protection circuit. Background technique

[0002] The signal transmitted by the sensor in general industrial detection is very weak, and the power supply voltage of the preamplifier will affect the amplification quality of the signal, and some power supply voltage is also used as the carrier signal of the useful signal, so the quality of the power supply voltage of the preamplifier Strict requirements. The traditional battery undervoltage and overvoltage detection measures work stably when the battery voltage is small, but when the voltage is higher than 24V, the battery supply voltage and current discharge are very unstable when undervoltage or overvoltage. Contents of the invention

[0003] The present invention aims at the problems existing in the battery-powered...

Claims

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