The ultra-sonic liquid level indicating circuit composed of NE555

Published:2011/8/23 22:40:00 Author:qqtang | Keyword: ultra-sonic, liquid level, indicating circuit | From:SeekIC

In the figure is the ultra-sonic liquid level indicating circuit. The circuit consists of the ultra-sonic emitting circuit and receiving circuit. The ultra-sonic emitting circuit consists of the 555, R1, W1, C1 and ultra-sonic emitting head UCM40T. The ultra-sonic receiving circuit consists of the receiving head UCM40R compatible with the emitting head, cascade amplifiers BG1 and BG2 and the test circuit. When the liquid level is approaching the receiving head, the voltmeter deflection angle is rising up, and the closer the liquid level is, the bigger the deflection angle will be.



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