| 摘要 |
PURPOSE:To prevent abnormal advance angle, by correcting ignition prior to desirable ignition timing through a signal based on an average rotation speed. CONSTITUTION:When ordinaly waves are generated in a signel generator 1, an amplifier 2 and a flip flop circuit 31 are actuated, and the electric charge of a condenser 33 that has been charged is discharged, and when it decreases to a prescribed electric potential determined by a comparator 35, an ignition signal is generated. The output of a F-V circuit 4 is inputted into a f-v circuit 51 of an abnormal advance angle preventing circuit 5. The f-v circuit 51 sets a minimum charge voltage of the condenser 33 for a prescribed rotational frequency of the engine, and when the charge voltage is insufficient, a transistor 57 is turned ON to promote the charging of the condenser 33 through a resistor 58. |
