Title:
PROTECTIVE CIRCUIT AND BIOLOGICAL SAMPLE PREPARATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/134533
Kind Code:
A1
Abstract:
Embodiments of the present application provide a protective circuit, comprising: a control module; a first loop, the first loop comprising a constant current source and a resistance value detection module; and a second loop, the second loop comprising a power supply and an overcurrent detection module. The resistance value detection module detects load resistance values at two ends of the constant current source and sends said load resistance values to the control module; if the load resistance values are not within a preset range, the control module controls the power supply to not supply power; and if the load resistance values are within the preset range and the overcurrent detection module detects an overcurrent, the power supply does not supply power. In an embodiment of the present application, load resistance values at two ends of the constant current source in the first loop are detected; if the load resistance values are not within a preset range, no power will be supplied to the second loop; if the load resistance values are within the preset range, then it is determined, according to overcurrent detection by the second loop, whether to supply power to the second loop; and for the first loop in which the constant current source is excited, a short circuit of said first loop will not cause a large current, thereby achieving short circuit protection between any electrical loops.
Inventors:
HUANG YURUI (CN)
LI KAI (CN)
LIU YONGJUN (CN)
LI CHENGYUAN (CN)
LI KAI (CN)
LIU YONGJUN (CN)
LI CHENGYUAN (CN)
Application Number:
PCT/CN2023/070657
Publication Date:
July 20, 2023
Filing Date:
January 05, 2023
Export Citation:
Assignee:
RWD LIFE SCIENCE CO LTD (CN)
International Classes:
H02H7/12
Foreign References:
| CN105983178A | 2016-10-05 | |||
| CN114498562A | 2022-05-13 | |||
| CN2655310Y | 2004-11-10 | |||
| CN103068440A | 2013-04-24 | |||
| CN101201635A | 2008-06-18 | |||
| JP2000250645A | 2000-09-14 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)
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