| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a controller with which malfunction, etc., caused by chuttering can be prevented by a digital circuit in simple configuration under the control of a CPU. SOLUTION: A flip-flop(F/F) 23 for state detection outputs a switch detecting signal P2 at 'H' level to a CPU 3 corresponding to the first trigger of switching operation at the time of power source ON or power source OFF. When a power source is turned on, corresponding to this first trigger of switching operation, a power source control signal (e) is turned to 'H' level by an F/F 24 for power source control and, when the power source is turned off, the power source control signal (e) is turned to 'L' level under the reset control due to the input of 2nd reset signal S2 from the CPU 3. The CPU 3 monitors the signal state of a chuttering monitor signal P1 and, when it is detected the stabilized state of the signal, at the time of power source ON, the reset of F/F 23 is contorlled but, at the time of power source OFF, the reset of F/F 24 is controlled so that the outputs of respective F/F 23 and 24 can be turned to the 'L' level.</p> |
