Electronics > Projects, Designs, and Technical Stuff
Where to find toroidal inductor carriers?
Mr Evil:
The inductor in the attached photo is mounted to a plastic base with pins and a recess for a zip tie. I've seen such plastic bits variously described as bases, carriers, mounts, and other names. I can't find them for sale anywhere though. Does anyone know where I could get some? I wind my own inductors and transformers often enough that it would be useful to have a few in various sizes. I might have to resort to getting some 3D printed if I can't obtain them off-the-shelf.
wraper:
Frankly it's better to just solder it directly on PCB and use neutral silicone to hold it in place, together with other heavy components.
DaJMasta:
3d printing would be my go to as the parts would be easy to make in low volume. If your core sizes are somewhat standard, you could make a carrier PCB to do the job. A few traces to header pin pads for your pins, then a cutout in the middle to hold the core in place and a zip tie to secure it to the PCB. You could probably make a few dozen for <$10 at a PCB house.
wraper:
--- Quote from: DaJMasta on December 31, 2019, 10:30:05 pm ---3d printing would be my go to as the parts would be easy to make in low volume. If your core sizes are somewhat standard, you could make a carrier PCB to do the job. A few traces to header pin pads for your pins, then a cutout in the middle to hold the core in place and a zip tie to secure it to the PCB. You could probably make a few dozen for <$10 at a PCB house.
--- End quote ---
You could use square PCB with 4 holes and fix inductor with silicone. Zip tie is not good solution. Very likely it will become loose with time. Plastic also tend to become fragile, especially under stress. Also what's on the picture above is not mechanically strong at all.
Mr Evil:
--- Quote from: wraper on December 31, 2019, 10:23:21 pm ---Frankly it's better to just solder it directly on PCB and use neutral silicone to hold it in place, together with other heavy components.
--- End quote ---
If I was just winding an inductor an putting it straight into a PCB, yes, but having them on a carrier is convenient when prototyping as it keeps the windings firmly in place while still allowing them to be rewound. Pins are also easier to insert into a PCB, especially if the windings consist of thin wire.
--- Quote from: DaJMasta on December 31, 2019, 10:30:05 pm ---...you could make a carrier PCB to do the job...
--- End quote ---
Not a bad idea.
--- Quote from: wraper on December 31, 2019, 10:40:00 pm ---...Zip tie is not good solution. Very likely it will become loose with time. Plastic also tend to become fragile, especially under stress. Also what's on the picture above is not mechanically strong at all.
--- End quote ---
The zip ties in the one pictured are not just to secure it mechanically to the base, but also to separate the windings. If you're going to put zip ties on it for that, then one might as well wrap around the base too. It can be daubed with silicone or potted afterwards if necessary.
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