Another Ultrasonic Proximity Detector Circuit
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Another Ultrasonic Proximity Detector Circuit

+43618IC175552VccRESETGNDTRIGGER+9VGNDC247μ25VC10.001μR310KVR14.7KR23.3KR13.3KT1BC327TX1 = ULTRASONIC PIEZO-CERAMICTRANSDUCER TRANSMITTERTX1T2BC337μAnother Ultrasonic Proximity Detector Circuit
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publish time: 2020-10-21
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We humans can only hear sounds up to 20kHz. Two special ultrasonic transducers should be used: one transducer emits 40kHz sound, the other transducer receives 40kHz sound and converts it into electrical changes of the same frequency.

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