is there any substitute or alternate for ferrite to make RF choke.because ferrite is not available in my city,so please any one help me!
The only one I know is air-core.is there any substitute or alternate for ferrite to make RF choke.because ferrite is not available in my city,so please any one help me!
Yes, you can use powdered iron. It has different properties than ferrite. I'm guessing it won't be available in your city either. Mail order is your last hope. You have not disclosed your location so it is hard to know how to help you. Maybe if we knew where you were some member could advise you on your problem.is there any substitute or alternate for ferrite to make RF choke.because ferrite is not available in my city,so please any one help me!
Sorry, I only know how to find websites that make the materials that I need, order them online, and purchase them with a credit card or PayPal. I have not been able to purchase materials for electronics in a retail establisment in more than 2 decades. I'm pretty sure they don't exist anymore. I know less than nothing about India, having never been there. The directions for winding enammel coated magnet wire around a resistor are on the web and not difficult to find.guys can anyone help me to learn "how to make RF choke on a resistor and how it works,how to make one practically"
Once again the wire used for winding coils needs to be insulated. Enammel coated magnet wire has the best chance of being able to meet your requirements. Also note that the resistor will be in parallel with any inductor that you construct in this fashion. It may or may not be appropriate in a power amplifier. I tend to think not, but that is just my opinion.Measure the diameter of the resistor body. That gives you the ID of the coil. Use a calculator formula to give the number of turns of the gauge of enamel wire you are using. Solder to one lead of the resistor, wind on the required turns, and solder to the other lead.
Yes of course it does. That is why you need to use the technique only where it is appropriate. Like where the R is ten times reactance of the L at the frequency of interest. The impedance will be R in parallel with the Ldoesn't the resistance of the resistor which i use to make RF choke affect the whole circuit!
I can't answer that question in general. A schematic diagram would be helpful.in a place of a rf choke(ferrite core) is it best to use aircore inductor or the inductor made around a resistor!!
The answer to these questions depends entirely on what you are trying to do. The answers you seek are not unique. Again a schematic would be helpful.is it best to use RF chokes made up of aircore inductor or else inductor around the resistor.
and another doubt is ,assume i want a 500nH RF choke(ferrite core),but can i replace it with a solenoid inductor of 500nH value,will there be any problem!
here is the schematic,there u can see the F1 and F2,the designer says the parameters for the both are : F1 = F2 = 18turns/0.5mm/2.5mm/ferite.The answer to these questions depends entirely on what you are trying to do. The answers you seek are not unique. Again a schematic would be helpful.