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Removes DC offset and lets high frequencies pass.
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Passes only a specific frequency range.
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Increases microphone or sensor output levels.
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Detect hand gestures using IR or accelerometer sensors.
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Convert sunlight into power for small devices.
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Detects finger touch instead of button presses.
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Regulates voltage from solar panels for safe charging.
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Reacts to proximity or direct contact using charge variation.
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Generate electricity from motion, light, or heat.