Morning Rick we do appreciate all that you do to help us to become more knowledgeable in radio electronic Thanks very much
@cyberlightbeing12 жыл бұрын
The way you explain stuff is simply brilliant!
@skycarl12 жыл бұрын
Another great look at the inside workings of a circuit. Chokes can be those mysterious components that work but can make you ask why. Thanks for another fun education video. 73
@Pwaak12 жыл бұрын
It's a real joy watching and learning from your video's! Thank You!
@southernexposure12311 жыл бұрын
Thanks for the good illustration. The choke you used was about 39 Ohms DC. The impedance of a coil changes with AC frequency, So let me see if I have this right - the importance of and effectiveness of using chokes rated in certain mH & uH is to choke AC from entering the power supply depending on the different frequencies of the RF amplifiers? And would there be any need for chokes in the IF? Thank you Thanks
@bisbeejim9 жыл бұрын
Thanks for the video. I've wondered all my life what a choke coil actually did.
@rothschadel12 жыл бұрын
great vid. could you add a segment showing the oscilloscope hooked up on the other side of the coil also. It should show little RF, correct?
@AllAmericanFiveRadio12 жыл бұрын
On the trainer there will be no signal because it is ground, all though your right there is a small amount of RF being shorted out. There will be a little RF getting into the power supply of the transmitter and I would like to show it, but I gave the AM Transmitter to SpeakerFreak95. And most of the RF will be shorted out though the filter cap. Its interesting that 150pf cap across the filter cap works better to short out the RF.
@MrUbiquitousTech7 жыл бұрын
Great demo Richard, thanks for sharing!
@AllAmericanFiveRadio7 жыл бұрын
Thanks
@billybonewhacker12 жыл бұрын
once again im learnin damn it. btw im building some of homer davidsons stuff from his book radio projects you can build.now i undetstand why all the chokes are needed. maybe you could do one on that 455 khz ceramic filter.thanks
@Phenyl8212 жыл бұрын
Thanks for this videos. Always learning from you. I appreciate it,
@MrSuperheterodyne12 жыл бұрын
Fantastic video. Very very nice teaching method you have, and nice clear explanations. I am grateful for these videos! Thanks!!!!
@AllAmericanFiveRadio12 жыл бұрын
Thanks Mick Bradford
@AllAmericanFiveRadio12 жыл бұрын
Hey John, I've done this before 2-3 years ago, but this one is a little more polished, and it is a different example. Anyway I should have bought stock in a capacitor company before you started working on that TV. Regards, Rick
@joernone12 жыл бұрын
Rick, Fantastic. This info is vital to one of my own future vids. But you're about four years overdue. :-) Thanks, my friend. Regards, John
@saturn5tony12 жыл бұрын
Any absolutely perfect explanation of an RF coil / resistor comparison I EVER HEARD!! In 6 minutes I got an example of something I knew, but to actually see, was an excellant way! Good job Rick. When I got my degree in electronics, I would have gradualted in a few months rather than years if YOU were teaching!!!!
@vibra6412 жыл бұрын
Another great video on electronics theory. Thanks!!!!
@AllAmericanFiveRadio11 жыл бұрын
Impedance is AC resistance, and it increases with AC frequency. The 39 ohms is DC resistance. That's it.
@MickLBrad12 жыл бұрын
Nice work, Rick.
@eugenifibla44968 жыл бұрын
Great Video! Very Educational. Congratulations.
@YQTFun12 жыл бұрын
Could you do more on AM and FM modulators?
@mitchellpurelife7 жыл бұрын
Thank you! Great video! I agree with Don Lewis.
@jstrunck12 жыл бұрын
Nice choke vid! Thanks, John
@OIE82 Жыл бұрын
Very cool video on chokes. So I guess a choke is (can be based on freq.) to AC what a capacitor is to DC. ?
@AllAmericanFiveRadio Жыл бұрын
A choke is frequency dependent.
@Froggy1951012 жыл бұрын
Another great video. That's why I am a subscriber.
@AllAmericanFiveRadio12 жыл бұрын
Thanks John
@MyTube4Utoo4 жыл бұрын
Interesting. Thank you for the video.
@AllAmericanFiveRadio4 жыл бұрын
Thanks
@GroverCricketDaisy24 күн бұрын
Hi Rick my question is regarding the choke coil. Does the coil stop the FR passing through it due to the magnetic field that it sets up and only allowing DC through? Thanks Bill
@AllAmericanFiveRadio24 күн бұрын
Hey Bill, it is the Moving magnetic field that produces impedance. Here are two videos that mat help. Impedance, Back EMF, AC Resistance kzbin.info/www/bejne/r2KUhJWjjbWMZ5o Impedance Back EMF Practical Demonstration kzbin.info/www/bejne/gKOsaHxvaL2tj80
@billwilliams63384 жыл бұрын
ALLAMERICANFIVERADIO, Why is a CHOKE frequency dependant for what reasons? Is the Chokes storing current like a reservoir like the filter capacitors or is the Choke doing something else to the AC ripple, not sure if the Choke is regulating the current?
@AllAmericanFiveRadio4 жыл бұрын
Yes the choke/coil does store energy. Here are some videos that may help. Oscillators, the Basic Tank Circuit 1 kzbin.info/www/bejne/nIKXqoWMet-Lh6M LC Resonance Testing Demo kzbin.info/www/bejne/bmW6nqGigMyHm8k LC Resonance Oscilloscope Demo kzbin.info/www/bejne/fZC1dKx6mdllqK8 PI filter, Resistor Choke Oscilloscope Demo kzbin.info/www/bejne/javaknuFa7yDec0 Capacitors, DC and AC Current kzbin.info/www/bejne/hHrRpWSJqJiph5Y
@AllAmericanFiveRadio11 жыл бұрын
Thanks yearningsoul
@multi-talented79864 жыл бұрын
What if I apply 1mega Ohm resistance instead of 50Ohm? Will the RF signal still short to ground?
@AllAmericanFiveRadio4 жыл бұрын
This is a low impedance circuit to DC and a high impedance circuit to RF. If you substitute a 1M ohm resistor for L2 you now have a high impedance circuit to DC and RF. But there is no RF because the plate has insufficient VDC.
@AllAmericanFiveRadio12 жыл бұрын
Thanks Phenyl82
@tommee1053312 жыл бұрын
Fascinating video sir, thanks for sharing it.
@AllAmericanFiveRadio12 жыл бұрын
Thanks vibra64
@AllAmericanFiveRadio12 жыл бұрын
Thanks cyberlightbeing
@AllAmericanFiveRadio12 жыл бұрын
Thanks MrSuperheterodyne
@GroverCricketDaisy25 күн бұрын
Thats amazing how that works
@AllAmericanFiveRadio25 күн бұрын
It is still fascinating!
@AllAmericanFiveRadio12 жыл бұрын
Thanks skycarl
@danhassan21089 жыл бұрын
It is because the back emf that the AC cannot pass the inductor yet the dc can pass the inductor right? Thank you for another concise video! you are not one of those other youtubers who does not know how to explain circuits:D
@AllAmericanFiveRadio9 жыл бұрын
AC current is changing constantly which causes the magnetic field to change constantly, and it's the changing magnetic field that is opposing, and are blocking AC current. DC current also produces a magnetic field and this magnetic field does oppose this current, but once the magnetic field is established and has stopped moving then there is no longer any opposition to the DC current.
@danielpincu77435 жыл бұрын
Excellent explaining!
@AllAmericanFiveRadio6 ай бұрын
Thank you, and your welcome.
@st2nh12 жыл бұрын
Many Thanks OM
@kuizatz Жыл бұрын
Excellent, thanks so much.
@AllAmericanFiveRadio Жыл бұрын
Thank you, and your welcome.
@ve2dzo12 жыл бұрын
Hi Rick Do you have a email? Is there a way to check a slb-1 or slb-3 diode mixer for shorts or open