Op-Amps, PWM and Ignition Coils Tutorial (Part 1/3)

[ib9rt]

I know electrical engineers do it a lot, but throwing the Laplace domain at the integrator doesn't really help to explain how it works. Anyone who can routinely write down Laplace transfer functions is already far beyond the level you are teaching here.

[Khwartz]

:-bd I I don't know about OpAmp at all, but you made me succeed to understand the general system you present, so Very Well Done! and thanks a lot! :)

[MrNingxiaoyu]

Thx a lot for this Video, however the gain of the 2nd OpAmp should be A=-R2 / R1(1+SCR2), if the value of R1 and R2 are very close to each other, then they can be cancelled out.

[DannjellZ0r]

Have watched many of your videos, they are AWESOME. You are so talented and very good att explaining things. IMO, you're in class with the lectures from MIT! (I do not attend MIT, just watch their lectures on youtube)

[grimmfactor]

Can you please clarify your formula for calculating the frequency of your relaxation oscillator? I am just unsure about the last part of the denominator that relates to the voltage divider.

[grimmfactor]

Excellent video. Can this project (the PWM part, not the high voltage) be done with pretty much any op-amp?

[TheSignalPathBlog]

@grimmfactor Yes, pretty much. Except that depending on the op-amp's unity gain bandwidth and slew rate, the maximum oscillation frequency would be limited.

[Humppapappavaan]

@6:45 I think you made a small mistake here. If R1 goes down, the potential (voltage) goes up, not down?

That said, your videos are great! You explain everything simply enough for beginners (like me) to understand, but you also go into great detail.

[TheSignalPathBlog]

@Humppapappavaan Yes, thank you! These videos are not rehearsed, so small mistakes will happen! ;)

[laharl2k]

i just want to tell u i love your vids and that as you were asking people to thumb up ur vids so that youtube would enable u to upload videos longuer than 15min in some other vid, yesterday youtube enabled me to upload longuer videos......don't know why, and if you see my chanel it's pretty basic/noob stuff...maybe youtube has a bot that enable random users...... xD

[Jiraya12345]

I can only hope my classes are as interesting as these videos!

[TheSignalPathBlog]

@Jiraya12345 Where do you study?

[Jiraya12345]

@TheSignalPathBlog

Northeastern University. I only just finished freshman year, so we haven't done any REAL electrical engineering stuff yet.

[TheSignalPathBlog]

@Jiraya12345 That is great, I am sure it will get more interesting. If you were at Columbia NYC, you could have taken my class!

[BHR477]

thanks for your videos ,,,, ;D

[TheCrazyInventor]

I really like your videos. The explanation is very nicely formatted. :)

[anthonycroberts]

Top notch content!

[KTecSystems]

Very good!!!!!!!!!!!!!!!!!!!!!!! :)

[toddrharrison]

Very good video on using op-amps! Thanks. Can't wait for part 2 & 3.