发明名称 |
POWER SUPPLY FOR A SATELLITE RECEIVER |
摘要 |
<p>A power supply (10) for a satellite receiver system includes a dual input supply voltage arrangement (200). When a higher output v oltage is selected, a source of a lower supply input voltage is coupled to an input, main current conducting terminal of a series pass transistor (Q1). On the other hand, when a lower output voltage is selected, a source of a lower supply input voltage is coupled to the input main current conducting terminal of the series pass transistor. A comparator (22) senses a magnitude of an output voltage (16) produced by the series pass transistor. When, as a result of an over current condition, the output voltage is lower than a reference threshold level (22a), any selection of the higher output voltage is automatically over-ridden and the source of the lower supply input voltage, instead, is coupled to the input main current conducting terminal of the series pass transistor.</p> |
申请公布号 |
EP1490979(B1) |
申请公布日期 |
2015.08.12 |
申请号 |
EP20030746133 |
申请日期 |
2003.04.03 |
申请人 |
THOMSON LICENSING |
发明人 |
FITZPATRICK, JOHN, JAMES;LELEY, SURESH, VISHWANATM;BOWYER, ANDREW, ERIC;CURTIS, III, JOHN, JOSEPH;PITSCH, ROBERT, ALAN |
分类号 |
H04B1/18;H04H40/90 |
主分类号 |
H04B1/18 |
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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