Cross Coupled Pair Oscillator Part 1

[@hibaajmal5904]

What my professor could not explain in 1 hour. This is excellent. Thanks Jordan!

[@andrewlees9056]

Thanks very much for a great video. One thing I've never understood about this circuit is how the ocillation amplitude is limited. In a spice simulation the output voltage seems to grow until it swings below ground and soft clips. Here we seem to assume that the MOSFETs remain in saturation. What am I missing?

[@idontseeit]

Hi Jordan, Would you mind sharing what textbook you used in your class for covering the cross-coupled oscillator? Thanks so much!

[@subramaniantr2091]

Excellent. I have been looking for a video that explains an inductor using magnetism explained from the theory of relativity. I heard this from veritasium's video and started going in search of it. I haven't been able to bring out a convincing argument as to why emf on an L is proportional to di/dt. Generally analog designers stay at this abstracted level from maxwell. But then some books on frequency synthesizers explain using magnetic field and potential which again becomes unintuitive. I would be really happy to see someone teach it.

[@wasimnawaz4929]

sir that was so comprehensive lecture. Thanks. But I could not find the next lecture of its continuation. Can you please share me the link of next lecture?

[@JordanEdmundsEECS]

Wasim Nawaz Haha I just realized I never created part 2! Thank you for finding this mistake, I will make it right away and will update this comment with the link.

[@wasimnawaz4929]

Thank you sir. One more thing, if I have any question, how can I ask. I mean to say, if it is feasible for you, can I have your email ID?

[@JordanEdmundsEECS]

The next video can be found here: kzbin.info/www/bejne/bqbFkqqlh9ugeZI I explain where to get the values for C and L, as well as how to make the thing controllable. Sure, it's [e-mail]

[@maroufkhan3648]

shouldn't it be input admittance and not impedance? The impedance is approximated as -2/gm

[@JordanEdmundsEECS]

You're absolutely right, I wrote Zin when the expression on the other side is the admittance.

[@maryemtanveer8121]

Hi there. I really very like all your videos. I am new to electronics. I have one question. When you connect Vdd, how come it biases the transistors through R since inductor would short it out?

[@thejunouyang]

That's the point. He is not trying to bias the resistor. He was trying to bias the drain of the transistors.

[@idontseeit]

I've always wondered how people came up with these sorts of circuits. It seems woefully unintuitive from first glance. Same for other oscillator designs or Sallen-Key filters. Like, is it sometimes dumb luck? Years of research? Guessing?

[@magnuswootton6181]

high frequency model.