The engine oil volume detector

Published:2011/7/23 8:46:00 Author:qqtang | Keyword: oil volume detector | From:SeekIC

The working principle of the circuitThe engine oil volume detector consists of the photoelectric control circuit and sound alarm circuit, see as figure 7-63. The photoelectric control circuit consists of the LED VL, light sensitive transistor V1, resistors of R1-R3 and R6, capacitor C1 and transistor V2.The sound alarm circuit consists of the resistor(R4, R5), capacitor C2, single knot transistor VU and loudspeaker BL.



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