Training Day 2

Ash Ketchum just finished his pokemon journey and realized he's unemployed. He attends Pikachu university and is learning about LEDs. With an Arduino, he turns the LED on. He wants the LED dimmer. How can he do this?

• You can't

• Use a zener diode

• Use PWM on the Arduino

• Connect a capacitor in parallel

Ash decides to become an electrical engineer inspired by Pikachu. But first, he must pass his lab class. He connects a battery to a light bulb. Then, he connects a diode as shown. Why does the light bulb get dimmer?

• The current increased

• The diode has a voltage drop

• The diode is in reverse bias

• Components in series are less efficient

Ash is bad at EE, but he's trying. He plugs in a battery to an inductive load but every time he plugs it in, the load blows up. The oscilloscope registers a huge voltage spike. How can he help fix this problem?

• Use a TVS diode in parallel with the battery

• Ash can't fix it. Can't catch em all.

• Add a 1M resistor so current is low

• Use a Schottky diode so the switching is faster

Ash is about to switch majors at this point, but MOSFETs switch faster. As he's about to switch majors on his portal, Prof. Zapdos calls on him. Help Ash stay an EE major. The prof asks which operational region of a MOSFET should we be in to control a lightbulb's brightness?

• Reverse Breakdown region

• saturation region

• deep triode region

• triode region

We successfully convince Ash to stay as an Electrical Engineer, but at night, he has nightmares about circuits. In his nightmare, the lightbulb returns. At school, lightbulbs are on all the time unless someone turns them off. What kind of FET would be the most efficient for this kind of operation?

• NMOS

• MOSquito

• PMOS

• AMOS