| 摘要 |
PROBLEM TO BE SOLVED: To provide a power saver which adjusts a reference voltage automatically, and produces a large power-saving effect without requiring much labor. SOLUTION: The power savor 1 detects power being used by a load with current transformers CT1, CT2 fitted to power lines 2, and a control unit 3 adjusts the reference voltage, according to the power being used. A voltage- detecting means compares the detected voltage and the reference voltage, and determines the power-saving width, decreases an output voltage to the reference voltage by a transformer T, etc., and outputs it to a load. |
