Title:
POWER-ON SELF-TEST PROTECTION CIRCUIT AND 3D PRINTER
Document Type and Number:
WIPO Patent Application WO/2022/110485
Kind Code:
A1
Abstract:
A power-on self-test protection circuit, comprising a controlled switch (10), a switch power supply (20), a delay module (30) and a main control board (40), wherein the controlled switch is conducted when being pressed, so that an external power supply (00) supplies power to the switch power supply instantaneously, when being connected to the external power supply, the switch power supply generates an operation voltage, and the delay module receives the operation voltage to generate a delay signal during the instantaneous power supply period; the controlled switch controls delayed conduction thereof according to the delay signal, the external power supply supplies power to the switch power supply with a delay during the delayed conduction period, and the main control board receives the operation voltage to start a self-test function during the delayed power supply period, and outputs a power-on/power-off signal; and the controlled switch controls its own continuous conduction state according to the power-on/power-off signal, so as to control whether a printer device starts power supply normally. Further disclosed is a 3D printer using the described circuit. The power-on self-test protection circuit enables the power-on to be successful only after the self-test is passed, ensuring the safety of the device.
Inventors:
LIU HUILIN (CN)
TANG JINGKE (CN)
CHEN CHUN (CN)
AO DANJUN (CN)
LEI CONGJIN (CN)
LIU GENSHEN (CN)
CAI XIAOLIANG (CN)
TANG JINGKE (CN)
CHEN CHUN (CN)
AO DANJUN (CN)
LEI CONGJIN (CN)
LIU GENSHEN (CN)
CAI XIAOLIANG (CN)
Application Number:
PCT/CN2020/141112
Publication Date:
June 02, 2022
Filing Date:
December 29, 2020
Export Citation:
Assignee:
SHENZHEN CREALITY 3D TECH CO LTD (CN)
International Classes:
B29C64/20; B29C64/30; B29C64/393; B33Y30/00; B33Y40/00; B33Y50/02
Foreign References:
| CN204759081U | 2015-11-11 | |||
| CN203352132U | 2013-12-18 | |||
| CN108628431A | 2018-10-09 | |||
| CN202142841U | 2012-02-08 | |||
| CN109672257A | 2019-04-23 | |||
| CN208922107U | 2019-05-31 | |||
| CN202472301U | 2012-10-03 | |||
| CN105938335A | 2016-09-14 | |||
| CN203084468U | 2013-07-24 | |||
| JP2008017636A | 2008-01-24 |
Attorney, Agent or Firm:
SHENZHEN SCIENBIZIP INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)
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