专利名称：DC voltage threshold detector发明人：Vandergrift, Adrian E.申请号：EP10250472.7申请日：20100312公开号：EP2241897A2公开日：20101020
专利附图：
摘要：A voltage detection circuit (20;80) comprises a tap (21) to be connected to apositive line (22) and a return tap (74) to be connected to a return line (24) on a powersupply. The potential difference between the positive line and the return line is the inputline voltage. A scaling resistor network scales down the input line voltage to be indicative
of a voltage on the input line. The scaled voltage is connected to an input for acomparator (33). A reference voltage is supplied to the comparator. The referencevoltage supplied to the comparator is indicative of a threshold voltage at which anoutput of the circuit changes states. An output of the comparator communicates a signalto an optical isolation device (60) when the input line voltage is below the thresholdvoltage to turn the optical isolation device on and send a signal to an output of theoptical isolation device. The optical isolation device (60) is not turned on if the input linevoltage exceeds the threshold voltage. A DC power bus incorporating the voltagedetection circuit (20;80), along with an aircraft electrical system incorporating the DCpower bus are also disclosed and claimed.
申请人：Hamilton Sundstrand Corporation
地址：One Hamilton Road Windsor Locks, CT 06096-1010 US
国籍：US
代理机构：Tomlinson, Kerry John
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