Diode Tutorial Video URL https www youtube comwatch

Diode Tutorial Video URL: https: //www. youtube. com/watch? v=cyhzp. Fq. Xwd. A Questions based on the first 4 minutes

• What is a diode? • How do you know which way to put a diode in your circuit? • a device that allows current to flow in only one direction • check the little stripe on the end for correct orientation

What happens when you feed an AC voltage or current through a diode? half-wave rectification

Why is there a missing voltage in the second picture? There is no such thing as a perfect diode!

• What is the usual value of Vf? • Which criteria will determine the exact value of Vf? Vf ~ 0. 7 V Exact value determined by: • temperature • current • type of diode

Explain these four scenarios as presented in the video.

How can you predict whether a diode is going to melt on you? • by calculating the power wasted in the diode Reading equations: • The power wasted in a diode is given by Vf times the current flowing through it.

Compare these two scenarios and explain any potential issues and possible solutions. • low current • low heat • OK to use an ordinary silicon diode • higher current • more heat • better to use a bigger diode or a Schottky diode

What do these diagrams tell us about diodes? Placing diodes in parallel is not a reliable option.

Using these two diagrams, explain the term diode switching speed.

What are the four important things to keep in mind about a diode before using it? • • maximum rated voltage forward voltage current rating switching speed