| 摘要 |
<p>PURPOSE:To enable to effect sure ignition by a method wherein a high outut can be obtained even in a high frequency of 20kHz and sparks are rendered to be active sparks. CONSTITUTION:When a switch 16 is closed, a DC source substantially closed to a half-wave rectification is constituted against a rectifying diode 18 and a blocking oscillation circuit by a smoothing capacitor 19 of a capacity having a small time constant upon charging. A blocking oscillation constituted with an oscillating transistor 21, a high voltage transformer 13, a starting resistor 20 and base resistors 23, 25 is effected by this DC source. This blocking oscillation is rendered to an intermittent oscillation because the smoothing capacitor 19 is an electric source having a small time constant. By this oscillation, a high voltage of a high frequency (20kHz) is generated in an output winding NS of the high voltage transformer 13.</p> |
