I have been away from electronics for decades but my interest is renewed with videos like this. Makes no sense to me why you don't have many thousands of views, you are an excellent teacher, please keep your content coming.
That was a brilliant explanation, along with accompanying illustrations. Ideal radio theory knowledge for beginners, as well as a few of those approaching what might well have been considered intermediate levels. It certainly brought back memories LOL! Cheers, Phil.
Martin, excellent video. Thank you for taking your valuable time to make this video. I know how much time and dedication it takes to create these videos. This will help so many beginners, wish I saw this video when I got started so I didn’t need to struggle that much to understand the concept. Have a great day. Regards, Jay
I am not sure of your training, but transformers never amplify, they may step up voltage, but that is not amplification. Amplification requires more POWER out than in. The primary in this case has the output impedance of the plate which may be a few 10s of Kohms, the input is a grid which has high impedance (may be many megohms), so the transformer steps the voltage up, but does not amplify.
Still don't understand. referring to cct at 20:00. A signal is fed across the tank cct, resonant at 455k and currents thru the capacitor and primary will be equal but 180deg out of phase at resonance. The current in the coil will create a flux which will link with secondary (great). Now then,. below 455k the impedance of the capacitor will be greater than coil. At a very low freq the coil is an open cct but the coil will still allow a current which will still produce an AC flux, which will still induce a voltage in the secondary. Note: not all have a capacitor across the secondary. To be practical the transformer will still work down to at least 350k . So much for a high Q
i hope fibs answers or someone.... he saying the plus side of battery is IN.... when all others say its OUT.... ive always wondered what was what with this........... what is rite.. plus in or plus out
No transformers "amplify," they have a turns ration that can result in a higher secondary voltage than primary voltage, but the current is proportionate to that; no amplification.
Current is only heat waste in RF, audio and light applications. So it does amplify it to more usable form. Super joule ringer looper seems to work with beat frequency, so it really does amplify the voltage too.
@@Kangsteri So, I have a question for you. If a transformer amplifies, why do amplifiers - like stereo amps, guitar amps, etc. - require tubes or transistors, and power? Why can't you just connect your guitar to a transformer on the primary, and a speaker on the secondary, and be done with it? That answer of course, is that transformers transform, and amplifiers amplify. Or, what "amplify" means, in most contexts, is an increase in the of a signal. A transformer increases voltage at the expense of current, or vice versa. There is no It's what's called a
@@Kangsteri I have no idea what you're talking about with that last comment. I must say, that after having been granted a degree in Electrical Engineering and spending 40+ years in the industry, with five US patents, I have no idea why I'm having this argument; but you know what they say about arguing with someone on the internet....
So very happy to see another video from you! While I already knew the things you covered, it is such a treat and pleasure to hear you provide the education for all of us. It is always interesting to me to hear the different takes on a given subject from person to person and from time to time learn something new as well. I would love to watch many more new videos from you, and look forward to the next one to come our way. Thanks for sharing and know that you are very much appreciated my friend!
I have been away from electronics for decades but my interest is renewed with videos like this. Makes no sense to me why you don't have many thousands of views, you are an excellent teacher, please keep your content coming.
Hi Jim,
I’m humbled. Thank you so much. I’ll keep trying.
That was a brilliant explanation, along with accompanying illustrations. Ideal radio theory knowledge for beginners, as well as a few of those approaching what might well have been considered intermediate levels. It certainly brought back memories LOL!
Cheers, Phil.
Thank you, Phil! I appreciate it.
Martin - I always enjoy instructional videos. Thanks for taking time to produce and share your knowledge with us. All the best. Don
Thank you, Don. I appreciate it.
Brilliantly explained. I have learned a great deal from watching your video. You made it very easy to understand how the IFs work. Many thanks.
Thank you, Terry. I’m glad you found it useful.
Martin, excellent video. Thank you for taking your valuable time to make this video. I know how much time and dedication it takes to create these videos. This will help so many beginners, wish I saw this video when I got started so I didn’t need to struggle that much to understand the concept. Have a great day. Regards, Jay
Thank you for this. Great job !
@@davearmstrong1932 Thank you very much.
I never realized that an IF filter could be used as an amplifier. Thanks for the clear explanation!!!
Except that they can't, transformers, amplify, that is
Thank you for a visual explanation . Very useful for a beginner like me
Thank you sir!
🌹🌹💖💖👍👍👌👌👏👏🙂🙂🙏🙏
I am not sure of your training, but transformers never amplify, they may step up voltage, but that is not amplification. Amplification requires more POWER out than in. The primary in this case has the output impedance of the plate which may be a few 10s of Kohms, the input is a grid which has high impedance (may be many megohms), so the transformer steps the voltage up, but does not amplify.
You are correct.
Still don't understand. referring to cct at 20:00. A signal is fed across the tank cct, resonant at 455k and currents thru the capacitor and primary will be equal but 180deg out of phase at resonance. The current in the coil will create a flux which will link with secondary (great). Now then,. below 455k the impedance of the capacitor will be greater than coil. At a very low freq the coil is an open cct but the coil will still allow a current which will still produce an AC flux, which will still induce a voltage in the secondary. Note: not all have a capacitor across the secondary. To be practical the transformer will still work down to at least 350k . So much for a high Q
i hope fibs answers or someone.... he saying the plus side of battery is IN.... when all others say its OUT.... ive always wondered what was what with this........... what is rite.. plus in or plus out
Yes, it is a bit confusing. I'll try to do a fundamentals video on conventional current vs electron flow. Thanks for watching.
No transformers "amplify," they have a turns ration that can result in a higher secondary voltage than primary voltage, but the current is proportionate to that; no amplification.
You are correct.
Current is only heat waste in RF, audio and light applications. So it does amplify it to more usable form. Super joule ringer looper seems to work with beat frequency, so it really does amplify the voltage too.
@@Kangsteri So, I have a question for you. If a transformer amplifies, why do amplifiers - like stereo amps, guitar amps, etc. - require tubes or transistors, and power? Why can't you just connect your guitar to a transformer on the primary, and a speaker on the secondary, and be done with it? That answer of course, is that transformers transform, and amplifiers amplify. Or, what "amplify" means, in most contexts, is an increase in the of a signal. A transformer increases voltage at the expense of current, or vice versa. There is no It's what's called a
@@jviss07 Yes, torque for external movement needs current. Signal transfer in closed systems doesn't.
@@Kangsteri I have no idea what you're talking about with that last comment. I must say, that after having been granted a degree in Electrical Engineering and spending 40+ years in the industry, with five US patents, I have no idea why I'm having this argument; but you know what they say about arguing with someone on the internet....
So very happy to see another video from you! While I already knew the things you covered, it is such a treat and pleasure to hear you provide the education for all of us. It is always interesting to me to hear the different takes on a given subject from person to person and from time to time learn something new as well. I would love to watch many more new videos from you, and look forward to the next one to come our way. Thanks for sharing and know that you are very much appreciated my friend!
Thanks so much, Wayne! I appreciate your comments. More videos to come, now that I'm back on track.
Very good explanation on the working parts of the IF coil and how they function. Thanks.
Thanks for watching.