FALSE ENGINE TURNING ANGLE SIGNAL GENERATOR

PURPOSE:To change each output timing of a toothless signal and a measuring reference signal in an easy manner by reading each datum of both these toothless and measuring reference signals stored in a memory with a reading address signal out of a one revolution counter and outputting each of false toothless and measuring reference signals. CONSTITUTION:Each datum of a toothless signal and a measuring reference signal is stored in a read-only memory (ROM) 4 with an engine turning angle as the address. In addition, there are provided plural areas where each data different by engine type, through which proper selection takes place according to contents of these addresses A10 - A12. On the other hand, output of a square wave generator 1 is connected to a 360-timing advance counter 2. Moreover, this 360-timing advance counter 2 counts output pulses of the square wave generator 1, and output of each stage is connected to each of addresses A0 - A9 of the read-only memory (ROM) 4. The contents stored in the address designated by the output of the counter 2 are outputted to a buffer circuit 5 as data, and a toothless signal E and a measuring reference signal F are outputted from this buffer circuit 5.