Transformer vs SMPS in panels

[aechlin]

On 18/02/2023 at 07:52, sixwheeledbeast said:

Lights are applications that don't matter too much for stability they are unlikely to be switched mode more dropper style circuits.

Computer PSU's need to be very stable but are much larger and more expensive. Neither can be compared for the application of an alarm.

A poorly designed SMPS will be noisy and have poor efficiency at a low load for example, linear is much simpler to get smooth supply in a small package.

Linear can also have a better life expectancy due to the lower complexity but that is unlikely to be a huge concern in modern electronics... if you get 10 years out of it.

 

As I understand it Elmdene make many of the SMPS on behalf of panel manufacturers and even they have had issues during the design process.

As much as copper has increased so have costs for other components and materials relative. You also may have to get your product you have been selling for years re-tested for sale in the market this all adds cost.

There are as always two sides to the story.

 

sixwheeledbeast, I totally agree with your reasoning, put like that makes sense. I can now stop wondering, and get some sleep!