Published:2011/7/20 1:48:00 Author:TaoXi | Keyword: Motorcycle, electronic, ignition | From:SeekIC
The principle of the circuit
The motorcycle electronic ignition is composed of the time base integrated circuit IC, the switching tube V, the voltage stabilization diode VS, the diode VD and the external components, the circuit is as shown in figure 7-137.
The monostable circuit is composed of the IC, the resistors R1 and R2, the capacitor C1-C3.
The +l2V voltage is reduced and limited by the diode VD and R3, then it is stabilized by VS to be the +5.lV (Vcc) voltage that can be used as the operating voltage of IC.
Components selection
R1, R2 and R4 are the 1/4W carbon film resistors; R3 is the 1W carbon film resistors;C1 is the high-frequency ceramic capacitor; C2 and C3 use the polyester capacitor or monolithic capacitor.
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