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40KHz Ultrasonic Transducer specifications
Can anybody help me with details of the Sanwa SCS401T and SCM401R 40KHz
ultrasonic transducer? This part is available from Farnell as 143-736 and 143-737, and Maplin as HY12 I have a matched pair. One marked 40T which seems obvious as the transmitter but this doesn't show any polarity. Niether connection is connected to the screen can. Is polarity important for this transducer? The other must be the receiver but is unmarked, however one pin is obviously the ground as it's connected to the screened body. Thankyou. James |
#2
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"James" wrote in message
... Can anybody help me with details of the Sanwa SCS401T and SCM401R 40KHz ultrasonic transducer? This part is available from Farnell as 143-736 and 143-737, and Maplin as HY12 I have a matched pair. One marked 40T which seems obvious as the transmitter but this doesn't show any polarity. Niether connection is connected to the screen can. Is polarity important for this transducer? The other must be the receiver but is unmarked, however one pin is obviously the ground as it's connected to the screened body. The transmitter can go either way round. So can the receiver, but the case is intended to be grounded to provide screening; it is working with much smaller signals than the transmitter. Leon |
#3
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Many thanks.
James The transmitter can go either way round. So can the receiver, but the case is intended to be grounded to provide screening; it is working with much smaller signals than the transmitter. Leon |
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