Synchronous detection circuit for frequency changing air conditioner digital voltage lifting PFC circuit
Title：
Synchronous detection circuit for frequency changing air conditioner digital voltage lifting PFC circuit
Application Number：
 200610146986
Application Date：
 2006/11/28
Announcement Date：
 2007/06/27
Pub. Date：
Publication Number：
 1988370
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 94[China|shenzhen]
IPC：
 H02P 27/06, H02P 27/08, H02M 5/44
Applicant(s)：
 Postgraduate Inst., Tsinghua Univ.
Inventor(s)：
 Xu Zheng, Chen Ruijian, Li Youchun
Key Words：
 air conditioner, voltage lifting, PFC circuit, synchronous detection
Abstract：
 This invention relates to a synchronous detection circuit of a conversion air-condition digit boosting PFC circuit including a comparing circuit, the positive input end of which is connected with a reference level, the negative input end is connected with a voltage sampling circuit linked to a rectifier circuit output end, a serial circuit of a resistor and a diode is connected between the output end of the comparator and a reference end, four diodes bridged in the rectifier circuit are parallel to a capacitor separately and the output end of the circuit is parallel to another resistor, which weakens the HF pulse interference signal overlapped on the output voltage of the rectifier circuit from a reverse circuit, and the serial resistors and diodes of the feedback loop of the comparator increases the bandwidth of the slag ring response to ensure that synchronous signals have enough pulse width.
Claim：
Priority：
PCT：
LegalStatus：

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information





News & Events More>>

Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo