Tank circuit inductor

Thread Starter

waulu

Joined Dec 23, 2016
8
Hello,

I am designing a simple oscillator in ltspice. It's working perflectly fine, now I need to build it. The inductor of the tank circuit is 8.2uH I was thinking if I could use a fixed inductor (or whatever it's called, see the image) or if I should just stick with an air coil. This oscillator will be used in a radio transmitter. What would be the pros and cons?


Thanks.
 

Thread Starter

waulu

Joined Dec 23, 2016
8
Ok I am surprised. These inductors are available with values since 100nH to 1mH and they are all the same size. I would expect the size of the inductor to increase a lot with its value. I will try it and see what happens.
 

Thread Starter

waulu

Joined Dec 23, 2016
8
Ok those have "ferrite DR core", it's what is in datasheet, but they are pretty good. I bought a kit of inductors from China (I am still waiting for them) but I bet they won't be that good. Meanwhile I bought PVC to make an air coil inductor, I will use both inductors and compare the results.
 
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