It sounds like what you want is for someone to hand you a complete solution to YOUR homework problem.Thanks for your answers guys! id like to know what the simplest way to express it is?
Preferably with AND OR NOR etc gates as it is all we have seen in class so far
This was in class work and the teacher himself was not sure. My best guess was to set up the NO contact with the start button in an OR gate. I realize this is not absolute because of the fact the relay needs to be energized before this is true.It sounds like what you want is for someone to hand you a complete solution to YOUR homework problem.
Why don't YOU post YOUR best attempt at a solution and then let people help guide YOU to a solution?
Not quite. The STOP switch is in series with the parallel combination of START and M. You already said that a parallel connection suggests an OR function. So a series connection suggests which of the logic function you have already learned about?The stop switch will break all current from continuing to the rest of the circuit. I had drawn it as a NOT initially then changed it to be A' in the OR gate with the relay's normally open contact.
As a class, this is our 2nd day in this course so my knowledge is very limited in boolean. Only the basic gates.
You can factor the STOP from the terms that are OR'ed together to get
STOP & (START | M)
Where & stands for AND and the vertical bar stands for OR
Now all you need is a device that will remember the value of M when START is released and goes back to zero. This device is called a latch and it is a combinatorial circuit.
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