| 摘要 |
<p>In a television receiver having a picture tube that requires an ultor accelerating potential and an intermediate direct voltage, such as a focus voltage, a high voltage generator is provided that develops the two voltages. A source of alternating voltage is coupled to a primary winding of a transformer for developing an alternating polarity voltage across each of two high voltage secondary windings. A first voltage doubler is coupled to the first high voltage winding for rectifying the alternating polarity voltage developed across the winding during both polarity intervals thereof to produce a first direct voltage. The first direct voltage is applied to an intermediate voltage terminal to generate the picture tube intermediate direct voltage between that terminal and a reference terminal. A second voltage doubler is coupled to the second high voltage winding for rectifying the alternating polarity voltage developed across the winding during both polarity intervals thereof to produce a second direct voltage. The first and second direct voltages are combined and applied to an ultor terminal to generate the picture tube ultor accelerating potential between this terminal and the reference terminal.</p> |
