The ultrasonic wave receiver circuit

Published:2011/6/5 21:06:00 Author:Seven | Keyword: ultrasonic wave | From:SeekIC

Figure 9.7 shows a receiver circuit of high sensitivity. The signals, which are received from the microphone UW, is magnified to 1000 times by NE542V. And the output is rectified by VD1 and VD2 into a DC, finally, it takes actions by the VMOS transistor controller. The output current of VMOS transistor can reach 2A. Therefore, large load can be driven, such as the magnetic valve, high-power light and so on.



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