Intel Corporation Interview Question: What are the parts in a relay... | Glassdoor

Interview Question

Manufacturing Technician Interview

What are the parts in a relay? Why would you use a relay

  instead of a transistor for a switch?
Answer

Interview Answer

1 Answer

1

Mechanical relays can handle much higher currents than a transistor. (100 A vs < 50 mA)

Optical relays are much more "plug and play" than a transistor. You don't have to worry about biasing or resistors or anything.

For PCB circuit use you can use either a transistor or a low current optical relay. Both take up about the same size.

Anonymous on Feb 20, 2012

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