Automotive Fuel Monitor Four

Published:2011/7/27 6:42:00 Author:Felicity | Keyword: Automotive Fuel Monitor | From:SeekIC

The circuit consists of fuel level monitoring circuit and alarm circuit. (It is showed in picture 7-61.) Fuel level monitoring circuit consists of ignition switch S1, gasoline-type table and float sensor potentiometer. Alarm circuit consists of alarm HA, LED HL, resistors Rl-R3, transistor Vl, V2, switch S2 and the relay K. This monitor can warn the driver to refuel while the car is going to run out of fuel. This automotive fuel monitor circuit consists of oil level detect circuit and alarm circuit ,as showed in the figure above. When the oil level is higher than the lowest level , the float sensor in the high impedance state,and V1 and V2 both cut off, HA is noiseless and HL is off. When the fuel is little and the oil lever is below the loweset level, the resistance of the float sesor drops to make V1 and V2 on. And K turns on, and the normally open contact of K closes; HA sends out alarm and HL lights up.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Automotive_Circuit/Automotive_Fuel_Monitor_Four.html

Print this Page | Comments | Reading(3)