SEMICONDUCTOR RELAY
To provide a semiconductor relay that comprises an RC oscillation circuit operating stably and is capable of high-speed operation.SOLUTION: A semiconductor relay 100 of a capacitive insulation system comprises: an RC oscillation circuit 10 that generates first and second signals having phases revers...
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Zusammenfassung: | To provide a semiconductor relay that comprises an RC oscillation circuit operating stably and is capable of high-speed operation.SOLUTION: A semiconductor relay 100 of a capacitive insulation system comprises: an RC oscillation circuit 10 that generates first and second signals having phases reverse to each other; a waveform adjustment circuit 20; a booster circuit 50; a charge/discharge circuit 60; and an output circuit 70. The waveform adjustment circuit 20 increases the rising time and falling time of the first and second signals, respectively. First and second withstand voltage capacitors 51, 52 provided in the booster circuit 50 and connected in parallel to each other respectively receive input of output signals from the waveform adjustment circuit 20. The booster circuit 50 receives the output signals from the waveform adjustment circuit 20 to generate a predetermined voltage, and the output circuit 70 is driven based on the predetermined voltage.SELECTED DRAWING: Figure 2
【課題】安定して動作するRC発振回路を備え、高速動作が可能な半導体リレーを提供する。【解決手段】容量絶縁方式の半導体リレー100は、互いに位相が反転した第1及び第2の信号を生成するRC発振回路10と波形調整回路20と昇圧回路50と充放電回路60と出力回路70と、を備えている。波形調整回路20は、第1及び第2の信号の立ち上がり時間と立ち下がり時間とをそれぞれ長くする。昇圧回路50に設けられ、互いに並列接続された第1及び第2の絶縁耐圧キャパシタ51,52にそれぞれ波形調整回路20の出力信号が入力される。昇圧回路50は、波形調整回路20の出力信号を受信して所定の電圧を発生させ、所定の電圧に基づいて出力回路70が駆動される。【選択図】図2 |
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