4 ms·

>not some noisy-ass AC/DC conversion https://www.jonnyguru.com/blog/2018/07/03/seasonic-prime-ultra-750-titanium-power-supply/4/ https://www.jonnyguru.com/blog

>not some noisy-ass AC/DC conversion https://www.jonnyguru.com/blog/2018/07/03/seasonic-prime-ultra-750-titanium-power-supply/4/ https://www.jonnyguru.com/blog/2018/07/03/seasonic-prime-ult... Is 30 dB SNR insufficient for a digital system? > My guess is that someone figured out how to shrink the necessary converters to a size that made it more "sensible" to put them inside the monitor I’m under the impression that this was demand/market forces. It used to be much cheaper to have an external brick rather than engineer a power supply into a monitor. However, the engineering cost was lower than the missed sales due to consumers not wanting external power supplies. It’s just another thing to lose. Another unique plug you’ll never be able to reasonably replace with what’s on hand.

PaulDavisThe1st 7y ago
"noisy" in this context referred to the output signal, not the acoustic levels. Also, the 12VDC native monitor that I did buy didn't have a unique plug. It used the fairly standard ring/core 12VDC jack and plug found in many different contexts, though not a lot of digital ones.
- willis936 7y ago
  12V / 6mV is ~33 dB SNR. What’s more is that the 6 mV ripple on this supply’s 12V rail is p-p and not RMS. So for most apples to apples measurements it’d be more accurate to say the SNR is closer to 35 dB. Regardless, seasonic supplies, and this one in particular, are very low noise. Most supplies are closer to 30mV ripple on the 12V rail.
  - willis936 7y ago
    Whoops. This should be 66-70 dB. I accidentally used power log rather than voltage log.