test 1 prep control circuits Flashcards
fill in blanks
relays are set up to _ _________ by the control circuit but ____ _____ the power circuit
4 words total 2 and 2
- be controlled
- will control
what are the three main ways to interfere with a circuit
manual command circuits
- temporary contacts (buttons)
- lasting contacts(switches, toggles)
- potentiometers(dials, pedals, throttles)
what is the control circuit responsible for
passing on commands to the power circuit (turn on, turn off, speed up, etc….)
what does NO and NC stand for
Normally open and normally closed
what does control circuits refer to
circuits that carry control signals to and from machinery
what does a normally open contact mean
the contact will be in an open state until triggered
what can be a NO
switches, buttons and relays
What can be thought of as an NC contact
generalization
stops
what makes a Normally closed contact
it is closed until triggered once triggered it will break a circuit and stop the power flow
what are some examples of control circuits
- start and stop buttons
- speed controls
- operation commands
what are relays
a type of contact and is often the end load of a control circuit
how many circuits are relays often connected to
two circuits with one side being attached to the control circuit and the other is attached to the power circuit
what is the power circuit responsible for
providing the load (motor, pump, light, etc…) with the power required
