| 摘要 |
A power supply circuit and display apparatus, comprising power source (1), charging/discharging module (2), detecting module (3), the detecting module detects detecting parameter on power-supply path, feeds back corresponding mode signal to the power source according to the detected detecting parameter, and outputs preset operation voltage to load (4); the power source receives the mode signal fed back from the detecting module, outputs power supply voltage corresponding to the mode signal, and charges the charging/discharging module when the mode signal is the low power signal; and the charging/discharging module is discharged to the detecting module when the power source outputs the supply voltage corresponding to the high power signal, and is charged when the power source outputs the supply voltage corresponding to the low power signal. The circuit can avoid effectively that the consumption of the power source fluctuates significantly with the power consumption changing of the load thereby the power source operates stably. |
