发明名称 |
Phase synchronization circuit for AC voltage |
摘要 |
A phase synchronization circuit for AC voltage includes an optical phase detection unit that outputs a phase detection signal by detecting an externally provided first AC voltage; a power failure detection unit that outputs a power failure signal by detecting the power failure condition of the first AC voltage; a control unit that selectively activates a selection signal according to the control of the power failure detection signal and outputs a phase control signal according to the control of the phase detection signal; a second AC voltage generation unit that generates a second AC voltage to have the same phase of the first AC voltage when outputting a second AC voltage according to the control of the phase control signal; and a selection unit that outputs either the first AC voltage or the second AC voltage according to the control of the selection signal. |
申请公布号 |
US9112509(B2) |
申请公布日期 |
2015.08.18 |
申请号 |
US201213535672 |
申请日期 |
2012.06.28 |
申请人 |
GREEN POWERSET CO., LTD. |
发明人 |
Hwang Kyu Min |
分类号 |
H02J9/00;H03L7/00;H02J3/40;H02M1/00 |
主分类号 |
H02J9/00 |
代理机构 |
William Park & Associates Ltd. |
代理人 |
William Park & Associates Ltd. |
主权项 |
1. A phase synchronization circuit for AC voltage comprising:
an optical phase detection unit that outputs a phase detection signal by detecting an externally provided first AC voltage; a power failure detection unit that outputs a power failure signal by detecting the power failure condition of the first AC voltage; a control unit that selectively activates a selection signal according to the control of the power failure detection signal and outputs a phase control signal according to the control of the phase detection signal; a second AC voltage generation unit that generates a second AC voltage to have the same phase of the first AC voltage when outputting a second AC voltage according to the control of the phase control signal; and a selection unit that outputs either the first AC voltage or the second AC voltage according to the control of the selection signal. |
地址 |
Seoul KR |