| Electronics > Beginners |
| Questions about steel square tube as power supply housing |
| (1/2) > >> |
| Barny:
I want to use a square tube as housing. Is there a problem when a toroidal transformer is surrounded with thick steel in short distance? The square tube: Dimensions: 160mm x 80mm x 4mm / 300mm long Material: Steel (S235) The toroidal transformer: Dimensions: ΓΈ142mm / 55mm high Prim: 230VAC Sec: 24VAC The fastener is a self-made bolt made of POM. Are there some potential problems which I have to look for? Are there traps for young-player? Is there a reason to not use a steel square tube as housing except the weight? |
| Brumby:
The trick with toroidal transformers is to NOT have an electrically conductive path that passes through the centre of the toroid and forms a closed loop around the toroid core. This is a shorted turn and will cause major overload. |
| Barny:
The center-clamping bolt will be made of POM. Its a plastic similar to PA, but with less water absorption and its better to be cut on a lathe. POM its not as waxy and translucent as PA. So you are saying that there is no problem with magnetic field through the air when there is steel close on the outside? |
| Gyro:
No, in that case it will just improve magnetic shielding. |
| digsys:
We've mounted literally 1,000s torroids on steel bases, steel caps and steel bolts clamping them in (hard rubber under the caps), no issues at all, of any kind. Like Brumby says, as long as you don't complete the circuit, it's all good. I don't think we've ever had to use Nylon / POM etc to clamp. |
| Navigation |
| Message Index |
| Next page |