3 ms·

It would depend on how well done the regulation was in the power supply, wouldn't it?

• dylan604 1y ago
  why people continue to misunderstand this befuddles me. If you bought a budget PSU, then who knows what the voltages really are coming down the +3/+5v lines. You hope they are only +3/+5, but what happens when the power dips. Is the circuitry in the bargain priced PSU going to keep the voltages within tolerance, or do they even have the necessary caps in place to handle the slightest change in mains? we've seen way too meany tear downs to show that's not a reliable thing to bank your gear on.
  • jojobas 1y ago
    PSUs don't really rely on caps to maintain voltage, there are negative feedbacks on top of negative feedbacks.
  • deleted 1y ago
    [deleted]
  • eqvinox 1y ago
    > why people continue to misunderstand this befuddles me. You might want to check whether your befuddlement is due to your own misunderstanding of the topic. How many switching regulators have you built? We aren't living in fixed AC transformer days anymore, even the shittiest PSU won't behave like you're making it out. The legally required PFC will already prevent it just by itself, before the main 400V DC/DC step-down even gets its hands on the power. And why are you even mentioning 3V/5V? Those rails only exist for compatibility, modern systems run almost entirely off the 12V rails; even SATA power connectors got their 3.3V (it's not 3V btw) pins spec'd away to reserved by now.