Logic elements Flashcards
How do you use logic elements?
Six ways of putting input/relay switches to a circuit. Forming basic blocks for complex sequences
What are the elements ?
AND, OR, NOT, NOR, NAND, memory
AND logic circuit
What’s an application?
Made of two normally open switches wired in series.
Application is a two hand circuit to protect the user’s hands (only working if both hands press pushbuttons)
OR logic circuit
What’s an application?
Made of two normally open switches wired parallel (meaning they’re connected to the flow through either)
Application is a button, or another, acting as a start button where one doesn’t need to be near the machine
NOT logic circuit
What’s an application?
Made of one normally closed switch wired in series with output (the output’s on when input isn’t vis versa)
Application is an emergency stop pushbutton
NOR logic circuit
What’s an application?
Made of two, or more, normally closed switches wired in series with output
Application are multiple stop pushbuttons in a circuit; assembly line
NAND logic circuit
What’s an application?
Made of two or more normally closed input switches wired in parallel with output (opening either switches will keep output powered; opening both will depower)
Application is the interior light of a car when a door is opened
Memory logic circuit
What’s used to make it happen?
Is used to output power after input signal is removed
The device used is called an electrical relay