HDD power supplies

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neb

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#2997469 17-Nov-2022 13:56

richms:
Do not replace a legit power adapter with a random aliexpress or ebay one.

Get something from element 14. I dont even trust the jaycar no brand PSUs because they may meet approval for not killing you, doesnt mean they are good.

2.1 and 2.5 does matter. If you put a sprung 2.5 plug on a 2.1 it will sort of connect, till it doesnt want to connect and then it will drop out for a bit.

Jaycar is fine if you get a Meanwell PSU, you can then also pick up a couple of 2.1 2.5 adapters in case it's the wrong size plug. Putting a 2.5 into a 2.1 is risky, it can glitch the power if you sneeze near it, or suddenly cut the power if it feels like it and the barely-touching contact loses contact.

neb

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#2997472 17-Nov-2022 13:59

Another consideration, if you have a lot of stuff that runs off 12V, is to get a single high-efficiency high-current power brick and run splitter cables off that, you can get them in almost any configuration for CCTV camera use. That's how I power all my 12V gear, a single 100W APFC Meanwell brick.

richms

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#2997500 17-Nov-2022 15:34

neb: Another consideration, if you have a lot of stuff that runs off 12V, is to get a single high-efficiency high-current power brick and run splitter cables off that, you can get them in almost any configuration for CCTV camera use. That's how I power all my 12V gear, a single 100W APFC Meanwell brick.

That's fine except on devices that connect to each other. If I do that with my old analog CCTV cameras, it causes massive crosstalk between the video signals from them. Separate adapters and there is minimal crosstalk. They design assuming that there is an isolated supply and will often have diodes or inductors in the negative side as well which are defeated when a ground loop is made with a shared supply.

Richard rich.ms

reven

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#2997503 17-Nov-2022 15:43

these are pretty handy

https://www.aliexpress.com/item/4000284844811.html?spm=a2g0o.productlist.0.0.695b4854XmnGxJ&algo_pvid=a74f361d-61d6-4b07-8732-7497f82e1f93&algo_exp_id=a74f361d-61d6-4b07-8732-7497f82e1f93-13&pdp_ext_f=%7B%22sku_id%22%3A%2212000023076380634%22%7D&pdp_npi=2%40dis%21NZD%2134.21%2133.18%21%21%21%21%21%4021031a5516686529412396463ea44f%2112000023076380634%21sea&curPageLogUid=u3mfI3pzAGgp

Basically a power board that can take any plug. just built-in travel adapter kinda thing.

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