AC-DC at own
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@axillent, i am designing your board on altium designer. However, i am facing difficulties with the footprint of the transformer. Is it possible to share it or your pcb file?
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@jeremushka I do have this footprint in altium but the library is big. do you know how to export a single element?
@axillent yes you are right. Same for me.
Usually, what i am doing is to create a project library from Schematic. For that, i open the Schematic. Then Design menu => make a schematic library. All the components and footprint of the Schematic will be copied and integrated. If schematic is huge or some components no need to extract, then i remove the one i don't need from the schematic library. At this end, you may have for example only the transformer component and footprint in the schematic library and you can extract this library for dxternal purpose. It is maybe not the best methodology (i don't know) but it works. -
@jeremushka said in AC-DC at own:
some questions regarding the schematics:
- does TVS diode 600W 5V is efficient enough? or absolutely need cut off at 160V such as 600W 160A ?
- for the Fuse, a slow fuse 10A is enough i think, isn't it?
TVS need to be for 120-160V in case you supply 230V AC. You can refer to linkswitch designer for your specific needs.
The purpose of this TVS is to be a snubber because of inductive load. Instead of TVS an RC snubber could be used.it is 3Watts supply, 0.5-1A slow fuse is fine
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Regarding the OP, there's an easier way: if every time you throw out some broken, old, or obsolete gizmo or tool you hold on to just its AC-DC power-supply/charger, pretty soon you'll be up to your eyeballs in power-supplies/chargers and have a lot to choose from when you do a project. With a big enough collection, you'll likely find a match for your project straight away. If not, then in all likelihood all you'll need is just a DC-DC converter, which are cheap (as little as $1 or less for some of them), and there's nothing scary about them.
Problem is safely solved for very little time and money. Even better, the AC-DC converter component is probably UL listed, which a purely homespun design won't be.
