3 ms·
And of course, AC didn't beat DC. DC is still widely used, for example in whatever device you're using to post this comment.
by chaosite 4y ago
And of course, AC didn't beat DC. DC is still widely used, for example in whatever device you're using to post this comment.
- colejohnson66 4y agoAC is also used, in a sense, through every switching power supply. The phone you’re using that’s running on DC is actually taking the DC from battery, converting it to “AC” to buck it to the lower voltage, then rectifying it back to DC for the processors. Wall outlet switchers are also the same. The incoming 120V AC is rectified and smoothed to 170V DC (240V AC goes to ~335V DC) before being chopped up back to AC to lower the voltage. After, it’s rectified and smoothed to the desired voltage. The USB outlet does that to 5V, your phone takes that down to 3.7V, then takes that battery voltage down even lower (1V or whatever) Basically, AC is used everywhere DC is. People just don’t realize it. Everything runs on DC, but requires AC to change voltages.