A circuit was drawn on the whiteboard consisting of two op-amps with reference voltages and and input voltage going into both op-amps. The outputs of the mosfet each had diodes, which were both attached to the gate of an n-channel mosfet, which had the source attached to ground, and the drain attached to a resistor which was connected to a reference voltage. I was then asked if I knew what the circuit did.
Design a low pass filter and draw its equivalent bode plot. What happens to the bode plot if you add a inductor in series with the resistor?
1st interview: Mainly behavioral questions 2nd interview: Behavioral questions and questions about my resume. A couple of technical questions that really depend on who's interviewing 1) Describe the block diagram of a Bluetooth wireless headset. 2) How would you improve the Bluetooth wireless headset? 3rd interview: Technical questions specific to my resume and presentation. My presentation had buck converters in it, so they asked me: 1) What's the purpose of the inductor and capacitor at the output? 2) How do you make the input more efficient?
Do you have any other offers or deadlines?
Basic op amps
Do you prefer working with analog or digital?
What is the point of these diodes/ analog components
Explain the function of this circuit (it was a laptop battery charger). The rest of the questions were all about the purpose of specific bits of the circuit
Are you able to manage multiple systems?
Do you know what XXE is?
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