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A comment on Teardown of a PC Power Supply. Parent comment

Re:Teardown of a PC Power Supply by agumonkey on Sunday May 23, 2021 @05:03PM (#27258574)
seconded, not to be alarmist but anything mains voltage is dangerous (caps are rated 400V~), shit happens fast. it can be a tough jolt or it can burn your skin, or pierce it or burn nerves or maybe shock you into worse cases

i repeat danger

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Re:Teardown of a PC Power Supply by LASR on Sunday May 23, 2021 @06:02PM (#27259033)
It’s not even the mains voltage.

There are components in there that can exceed mains voltage when probed the wrong way.

When you start getting into the higher voltages, the body’s resistance is much lower. It only takes a few milliamps to stop the heart.

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Re:Teardown of a PC Power Supply by Dylan16807 on Sunday May 23, 2021 @10:07PM (#27260469)
> There are components in there that can exceed mains voltage when probed the wrong way.

Not in a normal power supply.

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Re:Teardown of a PC Power Supply by kens on Sunday May 23, 2021 @10:41PM (#27260630)
In the described power supply, you'll find voltages of about 340 volts DC, for two reasons. First, AC is measured in RMS, which is considerably lower than the peak voltage. I.e., 120 volts from the wall swings between -170 volts and +170 volts. Second, this power supply uses a voltage doubler, so you end up with 340 volts DC inside.
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Re:Teardown of a PC Power Supply by Dylan16807 on Sunday May 23, 2021 @11:46PM (#27260911)
Doubling 120 to 240 is still mains voltage in my book, if a supply these days even does double.

Sure it's peak rather than RMS, but a warning that something "exceeds mains voltage" to me sounds like a description of a significantly bigger danger than that.

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