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:
Oct. 02, 2007
Filed:
Apr. 17, 2007
Chun-liang Wu, Taoyuan City, Taoyuan County 330, TW;
William F. Polley, Marco Island, FL (US);
Chun-Liang Wu, Taoyuan City, Taoyuan County 330, TW;
William F. Polley, Marco Island, FL (US);
Other;
Abstract
Energy-saving drive apparatus for DC loads including a blocking oscillator, an amplifier, an AC-DC-converter, a voltage comparator, a current comparator, and a signal feedback circuit. The DC power produced by all kinds of batteries pass through the blocking oscillator and the amplifier to obtain an amplified signal voltage that is then converted into DC voltage and current. Meanwhile, the voltage comparator and the current comparator are connected at an output terminal of the AC-DC-converter. The signal feedback circuit obtains a load signal voltage from the load. After a feedback operation, a comparison voltage and a comparison current are transmitted to the input terminal of the voltage comparator and the current comparator. After the different signal voltages and currents are compared, analyzed, edited and sorted, a constant voltage circuit between the load and the voltage comparator as well as a constant current circuit between the load and the current comparator give out a corrected constant voltage value and a corrected constant current value, respectively, for re-driving the load. Therefore, the voltage and current impedance of the load can be matched to each other by the correcting process of the signal voltage and current for achieving an optimal and efficient power-saving output state.