| 摘要 |
<p>Disclosed is an inverter-circuit power supply circuit capable of redriving an inverter circuit upon temporary blackout without turning on a main power again although the inverter circuit that is stopped due to a power supply voltage lower than a specified voltage, should be redriven by turning on the main power again. An inverter-circuit power supply circuit according to the present invention cuts off a backlight driving signal from a microcomputer (11d2) with a Zener diode (18a), a first transistor (19a), and a second transistor (20a) when a power supply voltage from a main power supply circuit (12a) is lowered, by use of a power recovery circuit (12c3) to thereby cancel a protective function of a protective circuit (17).</p> |
