Class A,B,AB,C and D amplifier (Udemy Course)

Hello! This is only the introduction of classes A, B, AB, C, and D, but we didn't do any simulation here! If you are eager to learn electronics, we made the perfect course for you! Check our the full course here:

[peterbiro]

The continuous movement of the mouse cursor is very annoying when it is just circling.

[WXSTANG]

People REALLY need to watch this video to understand how these topologies work. Nice work. BTW... no class H?

[samuelmolines]

Shouldn't the emitter of Q2 in the class B amplifier be connected to Out ?

[roncaruso]

Isn't the output signal of a class A amplifier inverted?

[vbbjqzv]

The phase shift of Class A should be 180 instead of 360.

[DRC_]

Couple points on class C:
- The slide diagram is wrong, you'll never have a resistor in the collector path like that. It will be an inductor, to form a tank circuit with that capacitor (like the example real circuit)
- The class C, on its own, is only good for amplifying RF signals in which the envelope does not carry information, so CW and FM only. It can only be used for AM and SSB amplification when additional circuitry for EER is implemented.

[alfredtambunan]

In Class B and AB amplifier, are you sure the PNP transistor's emiter pin is on that position? I think the collector pin shoud be to ground...

[joshmick]

Not cool. You're stealing this guy's course and uploading it to YouTube

[jimmychua]

May i know what class of amplifier if the power transitor are all same value of MJ15024 thank you.

[wolfganglohrie]

The continuous mouse movement is confusing and irritating….

[tertia]

What? Do you think you are some kind of Jedi waving your mouse pointer around like that?

[VeritasEtAequitas]

What's a sear quid? You mean a sur kit?

[jensgerlund]

I stopped watching cus the annoying cursor!

[catrazdana]

Wrong schematic on Class B, wrongly placed PNP and NPN transistor. Please don't teach people wrong.
At minute 8:15, transistor Q1 is acting as an oscillator, not an amplifier. Leave it to us please, you don't even know about yourself, you have nothing to teach us.