The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 2017
Filed:
Jan. 12, 2012
Applicant:
Baojun Wang, Guangzhou, CN;
Inventor:
Baojun Wang, Guangzhou, CN;
Assignee:
MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY LTD., Guangzhou, Guangdong, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/338 (2006.01); H02M 7/538 (2007.01); H02M 7/5383 (2007.01);
U.S. Cl.
CPC ...
H02M 7/538 (2013.01); H02M 3/3384 (2013.01); H02M 7/53835 (2013.01);
Abstract
A self-excited push-pull converter, where between the bases of the push-pull converter's transistors (TR, TR) and the effective power suppler there is provided a constant current source (II), which provides a constant current to the bases of the transistors. With the working voltage increases, the circuit enters into an operating mode not based on the core-saturation working mode, because the transistors' base current is limited by the constant current source and consequently the transistors' collector current cannot increase.