Resonant Frequency

[3mustardMoNkEyS]

So hooking up two IF cans back-to-back will result in a very focused band-pass filter?

[AllAmericanFiveRadio]

@3mustardMoNkEyS

Focus is an excellent way to look at it. With one lens you can focus light down to a small dot. Add another lens and focus the dot further. Something similar to this is when you have a tank circuit resonant (focused) at a frequency and you add another tank circuit. Of course the results are determined by the quality of the tank circuits (lens).

[stivep1]

Yes I agree with the previous viewers. Thank You for your work. Job well done. There is large number of people hesitating to ask questions in need to refresh their knowledge. Thanks to you everything is easy.

[GeneDunno]

Indeed a fascinating series of educational videos!  I am now a very happy subscriber. Thank you.

[Cifrocco]

I have an Associate degree in Electronics Engineering and these videos are teaching me more than I ever learned in school, lol. (Granted, it has been years since I graduated, maybe I just need a good refresher, well this is it) Great job!

I'm a passionate lover of tube technology, especially radio, but also audio amps. We need more stuff like this to keep it alive, get the younger generation to appreciate it and "propagate" it into the future.

[AllAmericanFiveRadio]

Thanks,

There are a number of my younger friend (YouTubers) like, 12SQ7GT BrooklynMouseReturns CameramanLink CassetteMaster coolbluelights crazyc89 damusician danielwaxmonski EmersonCollie jefferyb304 OldTimeRadioGuy Organgrinder010 sidebander SpeakerFreak95 speedyc395 vacuumstate Vinylrecordsneverdie W2QYVkz789

who are interested in vintage electronics. And this is just a few I could list, there are many more and that is wonderful.

[mrbsman]

I have figured out how to resonate an audio transformer.

At resonance a 1.5 volt battery produces 1000khz sharp pulsed dc peaking out at 4 volts!

I see extra energy,just as the body of a guitar amplifies the string's vibration. Higher amplitude at the same vibration means more energy.

I notice in 2nd demo, that the resonant amplitude is greater than than the original amplitude, yet the same frequency.

Has it occurred to you that the output is producing more energy than the input is giving?

[AllAmericanFiveRadio]

If the amplitude is higher (voltage) the current will be less and the resistance in the wire will produce a loss. The only unexplained experiment I know of is a laser experiment. It appears that the laser beam leaves the media before it enters! And this experiment has been repeated and remains unexplained.

[jaytec2010]

thanx for your efforts, well explained, it did help me

[AllAmericanFiveRadio]

Thanks! I'm glad it's helping and you're welcome.

[joernone]

Rick,

Once again, you grasped my full attention. You have a knack for that. Really good video. No one else comes close to what you're doing. It's been needed for a long time. You deserve many accolades.

BTW...don't worry about running out of ideas. When you think you've emptied the barrel, send me an email. There's no end to what I need to know. Consider me your dummy load.

Regards,

John

[AllAmericanFiveRadio]

Thanks John,

LOL,LOL

Regards

Rick

[coolbluelights]

Awesome! reminds me of my days in ITT Technical institude, though I never graduated because they made me take useless math (Algebra and trig):( trig has it's uses, but not algebra, and I simply can't do it :P

[AllAmericanFiveRadio]

I went to a ITT school in Jackson Tennessee. This was when they where still making phone stuff. I worked for one of there customers at that time.

[coolbluelights]

ahh I've seen some of their phone stuff

[retrochad]

I really enjoyed this demonstration...the oscilloscope display really displays the resonant frequency well. I also saw a similar techinque being displayed on radioam232's circuit for a storm detector receiver for finding the resonant frequency of the LC circuit.

[AllAmericanFiveRadio]

Ho yes, radioam232 has some very interesting projects. And I'm looking forward to more projects from radioam232. I've been going through the AA5 from the easiest circuits to the harder ones just like I did in my first book "The All-American Five Radio." I have started work on the drawings for the oscillator/mixer circuits of the AA5. I have made available on my channel, a free download of my latest book, I think you would like it.

[AllAmericanFiveRadio]

I wonder when I'm going to run out of ideas. And THANKS!

[CameramanLink]

This is a very nice explanation. We just learned about this in my physics class. You did a better job explaining it than my teacher! Unfortunately, we don't get into anything having to do with realistic applications. That's why I make my own circuits!

[AllAmericanFiveRadio]

I like using a circuit that you many have. It gives you a practical use for where the information is applied. Also many of these simple circuits are still used in the most current electronic devices of today, like the computer you are using now. THANKS.

[edudrepus]

This is very clear and interesting.  With your video's it's impossible to get confused. I really like them.

[AllAmericanFiveRadio]

Thanks so much, appreciate it. I try to keep focused on one subject if possible.

[CassetteMaster]

This is a very good video! It's interesting how it operates and works! I like it. I wonder, is a similar setup used for the biasing and a tape recorder?

[AllAmericanFiveRadio]

Thanks. The AC bias circuit in your tape recorders most likely uses a coil and capacitor in the oscillator circuit, and their values do determine the oscillator's frequency. There is one more part in the bias circuit that is not in this video, and that is the amplified feedback. It starts and keeps the coil and capacitor oscillating. I'm working my way to the front of the radio and that is the next circuit, the oscillator.

[cyberlightbeing]

Very informative & clear. Many thanks...

[AllAmericanFiveRadio]

I hope this is helpful, and thanks.