P6 - Relays Flashcards
1
Q
What is a relay used for?
A
To protect people using a low powered logic gate plugged into a mains source
2
Q
What is a relay?
A
A switch that connects two circuits.
3
Q
Why is there an electromagnet?
A
To close the higher current circuit with the rocker that pivots when the iron contact gets pulled to the electromagnets.
4
Q
Why would you use a relay?
A
To connect a higher current circuit with a lower current, so reducing the risk of an electric shock.
5
Q
How do relays work?
A
By separating two circuits
6
Q
What can happen to the logic gates if there were no relays?
A
They will get damaged
7
Q
Why are relays used to separate the high voltage from the low voltage?
A
To protect the high voltage circuit from spuds when he’s wiring for G.E Brights
