had a 5 hour long interview with many people. They kept coming in taking the interview going out. Three rounds. First one just a project description. Second one was a technical one. this one was the killer a deep question about a bjt transistor. It was in a circuit.
The process took 1 day. I interviewed at Lutron Electronics (Columbus, OH) in Nov 2009
Interview
There were 2 parts : 1. brain teasers 2. Simple tech questions. First , the interviewer asked me the lightbulbs room question. (There are 3 light bulbs , you are in another room with the switches for each of them .. look at any brain teaser site ). Then he asked me how to get a constant voltage from a source voltage . I suggested voltage divider . We did a few equations and numbers there . Then used a BJT to achieve similar DC - DC conversion. It was a simple interview . However , I did not make it to their onsite interview. Their analog position is more of a power electronics position.