Invention Grant
- Patent Title: Method and circuit for reducing ripple of current output by current source
- Patent Title (中): 降低电流源电流输出纹波的方法和电路
-
Application No.: US14768120Application Date: 2013-12-10
-
Publication No.: US09590487B2Publication Date: 2017-03-07
- Inventor: Xiaoli Yao , Liang'an Ge
- Applicant: INVENTRONICS (HANGZHOU), INC.
- Applicant Address: CN Hangzhou, Zhejiang
- Assignee: INVENTRONICS (HANGZHOU), INC.
- Current Assignee: INVENTRONICS (HANGZHOU), INC.
- Current Assignee Address: CN Hangzhou, Zhejiang
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: CN201310053985 20130220
- International Application: PCT/CN2013/088945 WO 20131210
- International Announcement: WO2014/127662 WO 20140828
- Main IPC: G05F1/56
- IPC: G05F1/56 ; H02M1/14 ; H05B33/08
Abstract:
Disclosed are a method and circuit for reducing a ripple of a current output by a current source. The circuit for reducing a ripple of a current output by a current source comprises a tube with adjustable impedance and a control circuit. The control circuit detects a direct current output by the current source to obtain a first signal which is in proportion to the direct current, and by comparing an instantaneous value of the first signal with an amplitude value of a set signal, controlling the increase of the impedance of the tube with adjustable impedance when the instantaneous value of the first signal is greater than the amplitude value of the set signal, so as to enable the amplitude value of the first signal to not exceed the amplitude value of the set signal and then enable the amplitude value of the current output by the current source to not exceed the amplitude value of the set current of the set signal, so that the purpose of reducing the ripple of the direct current output by the current source is finally achieved.
Public/Granted literature
- US20150381028A1 METHOD AND CIRCUIT FOR REDUCING RIPPLE OF CURRENT OUTPUT BY CURRENT SOURCE Public/Granted day:2015-12-31
Information query
IPC分类:
