(Part 6) How to Design, Build, and Test an RF Linear Amplifier (Output Board and Demonstration)
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- čas přidán 9. 09. 2024
- This multi part video focuses on the critical design aspects of an RF Push-Pull amplifier. The example shown uses an IRF510 MOSFET transistor to explain impedance matching, biasing, amplifier classification, circuit stability, feedback, tuning, power output, harmonic distortion, and other important design characteristics. From this video, the viewer will gain an in-depth understanding of how to design, build, and test an RF power amplifier. Please visit my web site for the RF amplifiers and other products I offer. rflinear-amplifiers.com
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Congratulations. Your videos are master classes. They have allowed me to understand perfectly how an amplifier works.
Are you going to post videos again? You are awaited with great interest.
Your presentation and explanations are as clean as your amps.
Veteran machine system designer here but total RF rookie so I'm learning a ton. Thank you!
Excellent information, thorough and well presented. I just watched the entire amplifier series, and now think I can build a similar amp from scratch. That makes me smile, because understanding and working with RF are what ham radio is all about. Thank you.
Thank you for your positive feedback! RF Man
Thank you for an excellent set of videos on RF amplifier design and testing.
Thanks!! RF Man
Thanks for sharing all step by step! Really appreciate your detailed explanation across the PA design
Thank you for posting these videos, this has been a great series.
Thanks for your comments! RF Man
Thank you .....nice work .
Great videos, I have learned a lot from your channel. Appreciate !! 73 de KC1ATW
Awesome video's! You did a great job covering all of this. Thank you!
My Pleasure! RF Man
Thanks a whole bunch for making all these videos and the work that you put into them; they are just great!
Also, amazing what you can do with IRF510s, a real little 'trooper' of a device!
I am planning to get into all this since I'm now retire so been collecting parts and equipment; just now need to fill-up on the theory.
Again, really appreciate it and 73...
I'm happy you found my videos helpful!! Regards RF Man
Very nicely explained . Excellent guide for making a good PA, which am planning to make. Thanks sir.
Glad I can help? RF Man
非常感谢你的讲解！ 极好的知识！ 学习了！ 再次感谢！！祝身体健康！
Excellent series! Subscribed for more of the same and similar.
Thank you for your work
Great and informative thank you! 73
Great videos. I have just gone through a lot of your videos and found them interesting. I am not a communication guy but really interested in finding a working simple circuit (made at home) for RF control transmittier and receiver for one bit or 4 bits over a few km and how to design an amplifier and choose an antenna to make it tens of km. I hope you can share some designs or resources and better if you could go through some videos designing and testing them
Vey good !
Hi, I watched the whole series, thanks a lot for the good videos and the great summary of formulars. Is there a chance to get your slides as pdf? Greetings from Berlin, Germany
First row in the table - FB resistor should be rather infinity than zero ohms for 0% of feedback ;)
Well done sir! I enjoyed the series! Are those circuit boards available?
If I get enough requests, I will order some boards and post them on my web site for sale. rflinear-amplifiers.com
Excellent video series!
I would like to ask what type of 4W preamplifier it is?
Thanks!
Hi, thanks for the nice videos! Could you provide the sizes for the cores of the chokes and transformers? Thanks!
These cores at 1" x 1" material 43 binocular ferrites. They are available from Arrow.com. Regards
@10:53 The feedback resistors actually made the 3rd harmonic worse, not better, because the fundamental went down more than the 3rd harmonic did! If you had put markers on you would have seen this.
Thanks for another great video! 785
Hi, thank you very much for your videos. I built your amplifier, and now I need to set it up. I have juste 15W on the output but I do not use M43 material, so I will change my trasformer.
Just a quick question, because I am so happy to understand a full video in English: where are you from?
Thanl you again , 73
Are the feedback resistors non-inductive? I would imagine that would be quite important for stability. Most film resistors seem to be spiralled and so slightly inductive. I wonder what you use?
What a great series thank you can you tell me where i can get a copy of the notes you show in the videos or can you sell me a copy a i would like to learn more and do some experimenting.
Do you have any scope waveforms of the drain voltages ?
Is this PCB available from you? Did you ever build one for 630m?
73's HB9HAL
Sorry, I don't have any more PC boards available. 160m is the lowest frequency I have worked with. Regards
Do you do repair work blf188xr
I only repair the pallets I sell. Regards
@@rfmanchannel6915 yeah I bought one from dx world a about a year ago and the ldmos burned up not exactly sure why