WTD: 9.5V adapter

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Lizard1977

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#319478 29-Apr-2025 11:11

During a recent house move I seem to have mislaid the power adapter for my daughter's small portable keyboard. I'm pretty sure it's the same as this one -Casio AD95 Power Adaptor 9.5V | Music Works

I've found a bunch of other adapters in my collection but the barrel plug is too large. I could go down to MusicWorks to pick up a replacement for $30, but maybe someone has one spare that they want to get rid of?

I'm in Palmerston North.

cshaun

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#3368681 29-Apr-2025 12:47

$30 is quite a bit pricey.

https://www.aliexpress.com/item/1005004253524578.html

You could also simply replace the barrel plug on the one you have. Pretty simple to do. Can buy barrel plugs from Jaycar, Surplus Tronics, Aliexpress, Temu etc.

Check specification for male or female and work out the size you need. Positive connection is usually the center pin but not always.

noroad

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#3368739 29-Apr-2025 13:02

I'd suggest this would do the trick (don't get hung up on the .5v they are not that accurate) https://www.jaycar.co.nz/9v-dc-1-8a-slim-power-supply-7dc-plugs/p/MP3484

SomeoneSomewhere

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#3368761 29-Apr-2025 14:34

Would not recommend the likes of Aliexpress for safety-critical equipment, and plugpacks are safety critical as they isolated you from the mains.

It's pretty likely that 9V will be fine.

cshaun

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#3368827 29-Apr-2025 15:58

SomeoneSomewhere:

Would not recommend the likes of Aliexpress for safety-critical equipment, and plugpacks are safety critical as they isolated you from the mains.

It's pretty likely that 9V will be fine.

Because of transformer design or because of things like possible lack of isolation sleeve on the plug prongs? Obviously you can get perfectly fine stuff from there, but hard to tell the difference.

SomeoneSomewhere

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#3368832 29-Apr-2025 16:10

Internal transformer/PCB design. You simply can't tell whether the insulation between primary and secondary is a nice >4mm gap on the PCB and separate bobbins or well-taped windings exiting on different sides of the transformer core, or whether they've just wound the primary right on top of the secondary and all that's been you and the mains is two layers of enamel, and PCB clearance is under a mm.

Likewise, the RF suppression could be a good Class Y cap, or it could be the cheapest thing they could get their hands on.

You've also got a good chance of RF issues because chokes will be cost-downed.

Lizard1977

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#3368834 29-Apr-2025 16:21

Yeah, I'd prefer not to buy a cheap adapter off Temu/Aliexpress (let alone the shipping times are often painfully slow). The ones on Jaycar are okay but not meaningfully cheaper than the one I can already get from Musicworks.

I'm really hoping that someone has a suitable adapter that they want to offload, rather than buying new. But if nobody has one, then it's off to MusicWorks for me.

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richms

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#3368840 29-Apr-2025 16:34

cshaun:

Because of transformer design or because of things like possible lack of isolation sleeve on the plug prongs? Obviously you can get perfectly fine stuff from there, but hard to tell the difference.

Look at bigclive or diodegonewilds videos of some of these adapters. Just 2 layers of varnish separating you from mains in many cases, and its worse because its recridfied DC mains.

At least with the jaycar ones you have someone who has done the declarations or tests to blame if something happens with it.

Richard rich.ms

SATTV

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#3368865 29-Apr-2025 17:52

cshaun:

SomeoneSomewhere:

Would not recommend the likes of Aliexpress for safety-critical equipment, and plugpacks are safety critical as they isolated you from the mains.

It's pretty likely that 9V will be fine.

Because of transformer design or because of things like possible lack of isolation sleeve on the plug prongs? Obviously you can get perfectly fine stuff from there, but hard to tell the difference.

Also you will become the importer and it is up to you to make sure it is up to standard. If it goes up in flames and the insurance company proves it was by that wall wart they will come after you for all costs. ( I know someone who was involved in a case like this, it was a usb charger )

John

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