Dental raidography device

A dental radiograph device comprising:

• an X-ray tube including a filament and generating X-rays;
• a high-voltage transformer operating at a switching frequency of 100 kHz˜10 tHz, amplifying input signals by using a power supply that outputs electricity of 10 c˜20 c, and wound with a primary coil and a secondary coil without interference with each other, the secondary coil having a diameter of 0.08 mm˜0.085 mm, so as to minimize an X-ray exposure dose by reaching a predetermined voltage allowing for radiography in short time without delay through reducing a rising time and a falling time when radiating X-rays, at the switching frequency of 100 kHz˜10 tHz;
• a filament transformer supplying power to the filament in the X-ray tube;
• a high-voltage multiplying circuit including an overvoltage protection circuit and converting output voltage from the high-voltage transformer into boosting voltage or DC voltage;
• and
• a power supply formed by connecting a plurality of module type power supplies in series in which insulating papers are disposed at both sides of a thin film anode made of copper and a plurality of thin film power units formed by stacking thin film cathodes made of aluminum is stacked and having output of 10 c˜20 c,
• wherein 0.01˜0.2 seconds are taken to scan a tooth.