Electrical transmission or interconnection systems – Miscellaneous systems – For particular load device
Reexamination Certificate
2007-10-02
2007-10-02
Riley, Shawn (Department: 2838)
Electrical transmission or interconnection systems
Miscellaneous systems
For particular load device
Reexamination Certificate
active
11785263
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.
REFERENCES:
patent: 5510974 (1996-04-01), Gu et al.
Polley William F.
Wu Chun-Liang
Riley Shawn
Rosenberg , Klein & Lee
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