| 摘要 |
PURPOSE:To utilize titled device for a surgical X-rays TV device effectively by providing titled device with a DC voltage generating circuit including a sine/ cosine potentiometer, a double-pole switching switch, plural saw tooth waveform generating circuits, etc. to dislocate a monitor picture at an optional angle. CONSTITUTION:The respective output terminals 1A, 1B, 1C, 1D of the sine/cosine potentiometer 2 in the DC voltage generating circuit generate a DC voltage always proportional to 90 deg. angular difference between the adjacent terminals. The terminals 1A, 1C are connected to the input terminals 5a, 5b of the double- pole switching switch and the terminals 1B, 1D are connected to the input terminals 6a, 6b of a switch 6. In accordance with the switching state of the input terminals, the switches 5, 6 can switch the video of a monitor device observed at the front and the back. A saw tooth waveform generating circuits 7-10 can set up period inclined angle waveform etc. of the output signals by a synchronize signal applied respectively and DC bias from the switches 5, 6. |
