| 摘要 |
A PC monitor includes a power saving circuit comprising: a DC power supply, a first transformer to provide a first power supply, a second transformer to provide a power supply for the Cathode Ray Tube heater, and a computer means to generate a control signal dependant on the mode of the monitor. In a normal mode both first and second power supplies are energised, if the monitor is idle for a period the first supply is switched off, if the monitor is idle for a further period the second supply is also switched off.
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