| 摘要 |
PROBLEM TO BE SOLVED: To provide a power source circuit, which can surely generate a high frequency voltage in a primary coil, when the secondary coil of a transformer is connected with a display having high resolution for high horizontal frequency and vertical frequency. SOLUTION: This power source circuit is equipped with a drive power supply 23, connected with one end side of the primary coil 22 of a transformer 1, a switching element 24 connected with the other end side of the coil 22, a capacitor 25 and a first diode 26. A second diode 30 is connected between the cathode of the first diode 26 and the drain of a transistor of the switching element 24. The cathode of a second diode 30 is connected with the drain side of a transistor, and the anode is connected with the cathode side of the first diode 26. |
