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Если ваш индикатор заряда OP-1 показывает только 4 зеленые лампочки, а не 5, и красный светодиод не загорается, то вы.. | ВКонтакте
5 basic things you may not know about the OP-1 / OP-1 Field - YouTube
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OP-1 guide: help - teenage engineering
Simple Battery Level Indicator Circuit using Op-amp
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OP-1 guide: help - teenage engineering
