TSP #4 - Frequency Generation: Crystals and Ring Oscillators (Part 4/4) 

Very good pronunciation! It´s easy for a non-native english speaker to understand you. Keep it up!

I bought a Beckmen 310 Tech DMM in college, circa '83. It recently died so I just bought a Fluke 87-V on ebay. It should arrive in a few days and I'm excited. I'm amazed how many nice features the 87-V has. $150 per month seems really low. You must be getting some great deals! That Fluke that I mentioned was $175, for example. I love your approach, buy used and fix it yourself. I sensed in the video that you treat your instruments with great care. That being said it should last a long time.

I definitely needed to watch this 4 part series before I watched the all the teardowns and reviews....guess I'll watch them again 🤓

Excellent in every way. Congratulations. I love your equipment, so accurate and everything at the push of a button. You are so young and used to the modern equipment including the frequency analyser. I normally make my own equipment including power supplies, signal generators and have one old analogue oscilloscope, but I manage. Have been playing about with exciting loop antennas, but since I do not bother with crystals, I use the loop antenna itself as the frequency determining element . It is all about showing the principles involved and I am not after such accuracy that you have shown in this video. Congratulations once again, you have a good understanding of the subject and can transfer the knowledge to others in the most excellent manner, with the highest level of diction and mastery of the language. Keep it up and good luck in your future dreams.

I'm still watching. Great video.

@GregUzelac Thank you! My lab has been growing steadily in the past 10 ~ 12 years or so. Most of the time I buy broken equipment from eBay or surplus stores and fix them up for my lab. But you can imagine if you spend $150 dollars a month (on average) on equipment, that is 21.6k in 12 years! ;) The oven is simply ridiculous, I agree!

Brilliant! Thank you for taking the time to put these videos together. As a Radio Amateur, this was very helpful in understanding exactly what makes crystals oscillate. I'm always eager to view your next video!! 73

Now this is a QUALITY tutorial. Luckily there are people out there with this pricy equipment who are willing to demonstrate and explain some extremely useful information for free. THANK YOU

@sjoerdbeukers Yes, this is my personal lab. Please check back soon for some new equipment reviews and teardown. I also have plans for more tutorials during this month. Thankyou for all your kind comments.

Your clear and simple explanations really help me to absorb the lesson. Thank you.

When I studied RF/HF 25 years ago the vast majority of the study was based on theory and calculations. Obviously I missed the fun part of the RF engineering. I really enjoy your videos!

I am a mechanical engineering masters' student who is focusing on mechatronics/robotics. Your video was amazingly helpful to learn about the topics they do not teach you as a mechanical engineer. Keep it up!!

Thanks for showing and demonstrating the temperature effects on various crystal oscillator types.

One of your videos popped up on the side of my screen, so I thought i'd check it out. I checked out the comments on one video and saw that Alan, W2AEW commented so I figured if he likes it that it must be good. He was right! Thank you! You make this interesting as well as informative. It flows at just the right pace for someone with little to medium training, such as myself can follow. Well done!

Very nice videos :) Do not worry about their length, we like them anyway! Thank you very much! Keep 'em coming! PS: It would be nice to show the frequency spectrum of the last (big) oscillator.

Watched the whole series. Great videos! Quality AV and thorough exploitation of the concepts. Loved seeing the old crystals in the 1st video. Will be looking forward to new videos from you. Thanks!

I watched all four parts and I must say that I really enjoyed every second of it. It was really interesting and informative. Don't worry about your videos becoming long. Since the content within them is really interesting, it's difficult to NOT stay focused the whole time. Thank you, and keep up the awesome work.

Wonderful! Thank you very much for making this!

@Assemblycode Thank you! Unfortunately spectrum analyzers are among the more expensive set of equipment. But I think you can pickup a 1GHz HP one for about $1200 from eBay.

Really great tutorial, professional way of explaining the crystals and the used tools, I really enjoyed it, and hope to see more your great tutorials.

Fantastic presentation skills. Thank you for sharing. You gave just the right level of detail. I'll be watching more of your videos for sure.

@TheSignalPathBlog I am jealous ;) I have a lab power supply oscilloscope function generator etc. and the best way to understand components is to see what it does. I learned by just looking at a signal through a capacitor on my scope.. changed the signal an looked what happened. at 1:11 you are cooling down a crystal.. that's the way to make people understand what is happening! great job!

Thanks! that was excellent. The visualization with the spectrum analyzer made all the difference. great job!

I've just found your channel and I appreciate all of the information and instruction! I've learned a lot from just this video and the video on delta-sigma modulation!

Excellent set of videos! Actually cleared up a lot of questions I had. As a mechanical engineer trying to learn and teach myself electronics & design all of your videos are great!

This was a great series of videos. My senior design project for my EE degree is to make a discrete Phase Locked Loop. For this I need a VCO and I was considering using a ring oscillator (probably around 11-13 stages). Seeing the VCO stability through the spectrum analyzer was very useful for me. Thank you!!

Great Video

Great, thanks. Hope, more tutorials and theory videos will be coming.

I've really enjoyed watching this video. The length of this presentation was just fine ;)

Fantastic videos, keep up the great work. Very educational, I love videos like this.

Great videos. Keep them coming! I knew most of what you presented here, but you did it well and kept me engaged anyway. And lovely gear. My word ;)

excellent presentation keep up the good job

i agree with all of you guys, you are a very good professor, thank you

Thanks for the series, so much more informative than what I received on my degree programme!

Another great and informative video, thanks! Though I personally had hoped to learn more about what the signal at the crystal actually looks like, and what kind of circuit is used to keep in oscillating.

@GregUzelac The Fluke 87 is a great meter! You are right about $150 being very little, I have to confess, at times I have spent much much more than that! ;)

Great video with clear explanations.

Outstanding!!! I like the spoken English as well. I would like if you can go through more theory.

great lesson learnt in these videos. thank you!

+1 => Excellent in every way !

It'll be great if you can show and explain the circuit that runs the crystal as well

Thanks for taking the time this was great :)

very very good work, detailed information, i got to see the inside of a crystal, thank you for sharing your knowledge, respect!!!

Thanks for the great video series. Very practical.

Excellent tutorial, thank you.

Hi Shahriar, Just one last remaining thing on the subject I was hoping you would show us how stable the large Oven based oscillator handled temperature changes in the extreme by cooing it and also how well it handled voltage change Pt 5 maybe include an atomic reference to compare with all of them thanks again great videos regards Sean

fantastic stuff!

I love this hands on, practical explanation of how things work. If you have time to make more videos, please do. I am interested in building a switching power supply, yet cant find a tutorial that I can understand. Thank you!!!!

Thank you for the video Sahriar!

7 years later and it is very intererig. An explanation of the drivi g circuit would be also interesting for a future video.

@TheSignalPathBlog PS the can dusters gas is R134a, a known refrigerant. boiling point is -26 or so.

Thank you, best hour ever spent on youtube!

Excellent video! Congratulations!!

Great videos, well done. Thanks for making them.

Beautiful Videos

Very well done !! Very helpful and interesting !! Thanks !!

Very informative video, thx!

excellent explanation

Good job! I love your bench, very tidy and clean. Your equipment is very nice as well. I see many tens of thousands of dollars in beautiful gear. May I ask how long it took to acquire all the instruments? The illumination is great, but the camera focus is slow at times. I have never seen a oven that big; my eyes popped and my jaw dropped when you introduced it to us.

Perfect tutorials, When You would wright a book with video's included on some memory stick, You would have mach client's me incl.I would like to start programming the PIC's, it's complicated (for me) though the graphic programming software Flowcode seems to be very helpful ! Thanks for Your nice job.

Very useful video, you did an amazing job, thank you so much!

awesome job

Hey Genius, thats very imformative. Thanks!

Thanks for the series, loved watching. Think you could find some time to explain the driving circuitry for a normal crystal and how it works?

Quite a perfect video for beginners. Moreover if I request to have a tutorial on designing different crystal oscillators and also some LC oscillators, can they be uploaded? I will be hoping for one from you.

awsome videos thanks for taking the time to make them learned alot

Very informative, thank you.

Thanks for the videos.

Very informative. Thank you.

Quality vid.

@hla27b Thanks :)

great video, thank you.

I have an instrument-grade OCXO somewhere, but I don't remember where. It is a very old one, and it has a fine-tuning screw on the side of it.

very cool - I would like to see the spectrum of the oven controlled oscillator.

Made it to the last. Happy about my day.

This video makes me want to go out and buy a spectrum analyser, but unfortunately I can't afford it and I'm not good enough to repair a broken one yet :(

Very thorough explanation about Crystal oscillators, thanks and I hope youtube makes you partner. Thanks

Little question though... are the instruments your own?

Congratulation for these very well explained videos. I'm a beginer in this and i have a couple of questions, i hope you can solve them. How do you know or figure out the tension and the voltage a crystal can bear? and how are related the tension aplied to a crystal and its overtones? Thank you!! and, once more, congratulation!!

Thank you soo much :)

Nice videos. I have a question about the crystal oscillator. I want a crystal oscillator with a frequency range less than 20kHz, but I found the lowest available frequency for it is about 32kHz. One way is to reduce the frequency by using a frequency divider. But I only have a small space for my oscillator. Therefore, I want to build my own oscillator with a frequency less than 20kHz with a small dimension. I am not familiar about the oscillator. Do you have any advice? Thanks.

nice video. s

super, very helpful, thanks =)

no spectrum shown for the big OCXO?

👍

Very interested in your video... ^_^

The Signal Path Blog will I get oscillations with just a crystal and a battery?

You didn't mention anything about VCXO's ..

Your camera really can't auto focus :(

I think I love you....

hello

excellent video. Keep them coming.