Hi,

I am building a circuit and wasn't sure if I should separate any of the components such as the inductors and the active components (transistors) so the inductors don't interfere with any operation. Does this matter with through-hole designs?

Thanks

Ross

 

It only matters when the other components are inductors, and those minly which are unshieleded or air core, toherwise it does not matter.

 

The principle component that an inductor will interfere with is another inductor. Toroids, and coils enclosed in a ferrite bobbin have low external fields and low susceptibility to external fields and so need less care.

 

Ok great. So I’m guessing depending on the size of the inductor you will need to have a certain amount of separation between them. I have the following inductors in the image, will they be ok having a gap between of a couple of holes on a veroboard/strip board?

 

Can you show your circuit?

 

https://electronics.stackexchange.com/questions/101232/avoid-inductive-coupling-on-two-near-coils

 

Can you show your circuit?

Hey,

Here’s the circuit. Some of the inductors are in series with the pitch antenna and some are used in the resonator parts of the oscillators

Thanks

 

No circuit yet.

 

Those are bobbin inductors -they are practically self shielding. Just do not stack them end-to-end and you should not have any problems. If you happen to be using them in a small signal application, then a little separation, maybe the diameter of an inductor should probably be enough.

 

No circuit yet.

Whoops. It’s here

https://www.element14.com/community...loadBody/16859-102-1-52275/HotRodEtherwav.pdf

 

Theremin! Still alive. Good!

 

You can also point the inductors in different directions, such as one standing, one laying on the borad, and thrid one perpendicular to both. That should give you good independence even when they are close together.

 

If those inductors are those you approach your hands to, it would be not practical. If IIRC all, even the original one, had them in line in the same position.

 

Magnetic fields from inductors generally do no directly affect other active or passive components, except other inductors, but that can induce small voltages in adjacent trances and wires which can be a problem in circuits with low level, sensitive signals.

 

You can also point the inductors in different directions, such as one standing, one laying on the borad, and thrid one perpendicular to both. That should give you good independence even when they are close together.

Hmm interesting.. so if the fields are aligned with each other they can interfere