Power failure protection device for online monitoring instruments
A power-off protection device and monitoring device technology, which is applied in the direction of circuit devices, electrical components, emergency power supply arrangements, etc., can solve problems such as power outages, loss of online continuous monitoring, data loss, etc., to achieve responsiveness and avoid monitoring blanks , the effect of simple structure
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[0023] A power-off protection device for an online monitor, the power-off protection device is used to provide power to the monitoring device, the power-off protection device includes a housing and a circuit board arranged in the housing, and the circuit board is provided for monitoring The device provides an external DC power supply and a storage battery for the power supply, and the external DC power supply can charge the storage battery. The external DC power supply, the monitoring device and the first switching element are connected to form a first control circuit. The battery, the monitoring device and the third switch element are connected to form a second control circuit. The external DC power supply, the storage battery and the second switching element are connected to form a charging circuit. The external DC power supply is also connected with resistors and capacitors to form a circuit board working power supply circuit. A control chip is arranged on the circuit boar...
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