Choosing the Right AC Adaptor to Model Names, Compatibility, and Cost

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Discussion Overview

The discussion revolves around selecting a compatible AC adaptor for an appliance, focusing on model names, compatibility, and cost considerations. Participants explore the importance of matching output voltage and current, as well as other factors that may affect compatibility.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether it is sufficient to only consider matching output voltage and current when selecting an adaptor.
  • Another participant mentions the availability of the specific adaptor model on eBay at a lower price.
  • A different participant emphasizes the need to ensure the correct choice between AC or DC, as well as the polarity of the plug (centre positive or centre negative).
  • One participant shares an experience regarding switching frequency noise affecting their circuits, suggesting that this could be a consideration in adaptor selection.

Areas of Agreement / Disagreement

There is no clear consensus on the factors that should be prioritized when selecting a compatible adaptor, as participants raise different considerations and experiences.

Contextual Notes

Participants do not clarify the meaning of the model number components, and there are unresolved questions regarding the implications of switching frequency noise.

rar0308
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I want to replace an adaptor for some appliance.
The part that is sold in an official website of the product is expensive.
So I'm looking for compatible models.
Is it usually OK to only consider matching Output Voltage and current?

S018QU2400050 is written on the apator.
I think 24 stands for 24V and 50 stands for 0.5A and S stands for switching.
Do you know what 018QU stands for?
 
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Don't know what the part number means, but...
the S018QU2400050 is available on eBay for about USD20.00
 
rar0308 said:
I want to replace an adaptor for some appliance.
The part that is sold in an official website of the product is expensive.
So I'm looking for compatible models.
Is it usually OK to only consider matching Output Voltage and current?
It depends on the appliance.

You need to make sure to correctly choose AC or DC. Also, the plug can be either centre positive or centre negative, and this is usually indicated by a symbol on the case near the socket.
 
I've had projects where the switching frequency noise on the output range through out my circuits.