发明名称 |
POWER SOURCE AND MODULATION DEFLECTING CIRCUIT |
摘要 |
A controllable switch operated at the horizontal deflection rate is coupled to a horizontal deflection winding to generate scanning current during a trace interval of a deflection cycle. A deflection retrace capacitor forms a retrace resonant circuit with the deflection winding during the retrace interval. A supply inductance such as a winding of a horizontal output transformer is coupled either conductively or magnetically to a source of supply energy. A second capacitor is coupled to the supply inductance and to the controllable switch and forms a second resonant circuit with the supply inductance within the retrace interval to generate a pulse voltage. The pulse voltage energizes a load circuit such as the ultor high voltage circuit. A modulation inductance is coupled to a source of modulation signals and to the deflection winding and supplies a modulation current to the retrace resonant circuit to modulate the amplitude of the scanning current without modulating the amplitude of the supply inductance pulse voltage. The modulation may occur at a vertical rate to provide east-west pincushion distortion correction. |
申请公布号 |
JPS58191572(A) |
申请公布日期 |
1983.11.08 |
申请号 |
JP19830069867 |
申请日期 |
1983.04.19 |
申请人 |
RCA CORP |
发明人 |
PEETA EJIYUARUTO HAAFUERU |
分类号 |
H04N3/16;H04N3/18;H04N3/223;H04N3/23;H04N3/233 |
主分类号 |
H04N3/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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