I am having trouble drawing up a state diagram or state table for a sequential circuit for something I am designing.
In = 1, Out = 0 In = 0, Out = 1 In = 0, Out = 0
I got this far, from refering back to a text book on logic and design: 1/0 0/1 0/0 A ---> B ---> C ---> D where each letter is a state which occurs because the previous input was what was needed....After this I am stuck. How are you suppose to map unwanted states, refer them all back to A cause the sequence isn't correct.
I was thinking using an edge triggered flip-flop, but then I got stuck....
I was also considering a SR latch, where the output is feedback to the reset line, but I needed some way to increase the propagation time, so that it doesn't reset in a few nano seconds and the solenoid has time to act.
I needed to pulse a solenoid to close a valve after a trigger had been activated, because the valve didn't have a spring return :( I could do it using a microcontroller, but if I could implement it with a sequential circuit it would be better....