Re: Anyone else seen this.

Carlos E. R. <[email protected]> wrote:
> On 2026-07-06 16:15, Rich wrote:
>> In comp.os.linux.misc The Natural Philosopher <[email protected]> wrote:
>>> On 06/07/2026 13:01, tony sayer wrote:
>>>> More or less any consumer grade switch mode power supply!  The
>>>> Draytek in question was a, can't remember the blinking number but
>>>> was a rack mounted jobby.
>>>>
>>> Mine has a wall wart.  Don't think its a switched mode johnny.
>> 
>> What does the wart state it outputs?  If it outputs regulated DC it is
>> /most likely/ a switch mode supply.
> 
> A *small* DC wart is surely a switched mode supply.

Indeed.  Size is a sure indicator.  The old transformer warts were 
limited size wise by how small a 50hz or 60hz transformer can be and 
still operate properly.  If the wart is smaller than the old 
traditional approximately 5cm x 5cm x 5cm cubes (at least that was the 
approximate size I remember for US 60hz 120v transformer warts) then it 
is most certainly a switched mode supply.

Weight is also another very reliable indicator.  If it does not feel as 
if it is filled with lead, it is a switcher.