CN209881390U - 一种开关电源电路及其输入过压欠压保护电路 - Google Patents
一种开关电源电路及其输入过压欠压保护电路 Download PDFInfo
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CN113885636A (zh) * | 2021-11-05 | 2022-01-04 | 安徽海勤科技有限公司 | 一种输入电压范围可调保护电路 |
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CN113885636A (zh) * | 2021-11-05 | 2022-01-04 | 安徽海勤科技有限公司 | 一种输入电压范围可调保护电路 |
CN113885636B (zh) * | 2021-11-05 | 2022-12-20 | 安徽海勤科技有限公司 | 一种输入电压范围可调保护电路 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A switching power supply circuit and its input overvoltage and undervoltage protection circuit Effective date of registration: 20210531 Granted publication date: 20191231 Pledgee: Bank of China Limited by Share Ltd. Xiamen branch Pledgor: XIAMEN GREATER ELECTRIC AUTOMATION Co.,Ltd. Registration number: Y2021980004190 |
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Date of cancellation: 20220711 Granted publication date: 20191231 Pledgee: Bank of China Limited by Share Ltd. Xiamen branch Pledgor: XIAMEN GREATER ELECTRIC AUTOMATION Co.,Ltd. Registration number: Y2021980004190 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A switching power supply circuit and its input overvoltage and undervoltage protection circuit Effective date of registration: 20220713 Granted publication date: 20191231 Pledgee: Bank of China Limited by Share Ltd. Xiamen branch Pledgor: XIAMEN GREATER ELECTRIC AUTOMATION Co.,Ltd. Registration number: Y2022110000155 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right |