From what I’ve read, YIG Spheres can be tuned up to 50GHz.

Excellent, never seen any of those inside. I’m watching the video with great interest.

Hey Kerry, good to have you back on the air again! Nice explanation and demo. Stay safe!

@KerryWongBlog

3 жыл бұрын

Thanks Dino! Yeah, I have been quite busy lately... Stay safe as well!

Excellent explanation. Very clear and instructive. I logged here now. Thanks.

Very interesting, thanks Kerry, I wondered how the YIG oscillator worked.

Thank you for sharing your videos. It's fascinating to learn a bit about these things as someone from a non EE background.

Great Video and great way to explain things. You made it so easy to understand. Thank you for sharing.

Good to see a new video from you!

@KerryWongBlog

3 жыл бұрын

Thanks! Have been quite busy lately...

Great video and well explained! 👍

Excellent video as usual Mr. Wong.....thank you.

Excellent tutorial. Thanks.

Thanks for the video. It was interesting for me.

EXCELLENT DEMO of a YIG osc. !!! 73 N8AUM

good one. i always wonder what's inside a yig oscillator

Thanks a lot, now I know more about these magic devices!

Thank you for this video. Excellent video. Very helpful to me. What is the voltage/current range on the FM coil? The -10 bias. Is it -10 relative to +20v ground?

@KerryWongBlog

3 жыл бұрын

The FM coil current range is similar to that of the main coil, up to 200mA or so.

@davidyeefrach4554

3 жыл бұрын

@@KerryWongBlog thank you Kerry wong. You give me insights. I find it very kind that you bother to answer casual questions on the comments.

Accelerated/discellerated charged particles in a material, emit specific electromagnetic waves. I wonder if it works the other way around, reverse causality. Those specific electromagnetic waves would be absorbed in the material, as negative lumincess, causing accelerated charged particles. Do quartz generate second harmonics in the microwave range, as well? Do yattirium iron garnet is an anisotropic resonator, or isotropic resonator? Is being anisotropic resonator, makes this material special?

Thank you Kerry for sharing this video, when I am measuring the YIG oscillators, I found out that if I connect a DMM into the FM tuning circuit in series will contribute to serious phase noise, do you think there is any method to isolate the DMM while measuring phase noise?

@KerryWongBlog

5 ай бұрын

Perhaps you could try using a current probe?

@Bombayah

5 ай бұрын

@@KerryWongBlog Thanks Kerry for the reply, definitely will try it

You learn by asking questions. What is the impedance of this transmitter? For impedance matching.

What could be the problem with both fans in my Bk Precision 1790 power supply not working… need help

hi, thanks... , plz how running projector acer dlp Without lamp halogene ,, or desactive test lamp ....hack board communication 3 optocouplers...thanks

I'm wondering if the frequency changed much with orientation?

@KerryWongBlog

3 жыл бұрын

The frequency doesn't change in any measurable way as the environmental magnetic field is very weak. However, YIGs are supposed to be mounted only in the way that is specified by the manufacturer (in this case it is vertical) as there are delicate components inside that may be damaged if mounted incorrectly due to external forces such as vibrations, etc.

Hello, if anyone can help, I need the firmware for the HP 8594A, thank you.

I have several vintage HP & Other Oscillators along with several parts. I'm looking for someone that has knowledge on how to use & may be interested in purchasing located in Alhambra

Please. Can someone explain how the -10dc biasing was done? He connected the( +)10dc terminal to the (- )of the 20v output on the power supply? Or He used an offset function on the power supply? I don't understand. Its -10bias relative to what? In other words, where is the other terminal of the -10bias, to create a loop with? I do understand that -10 is the mean average of a square wave with an offset of -20.

@KerryWongBlog

3 жыл бұрын

Hi David, the +/- bias are with respect to ground (pin 8)

@davidyeefrach4554

3 жыл бұрын

@@KerryWongBlog thank you all so much, kerry wong. Mighty kind of you to answer questions on the comments. Keep doing those marvellous videos.

This is how the pyramids used to work. Center taps. Our magnetic field is gone now compared to 50k years ago. I used to be head of QC for Wave tech California.

>>10ghz