3 ms·
what's your napkin math? because switching PSUs if well-done are pretty darn efficient even if idle (and the most efficient topology overall)
by detaro 4y ago
what's your napkin math? because switching PSUs if well-done are pretty darn efficient even if idle (and the most efficient topology overall)
- egberts1 4y ago35W/hour (rated phone charger) 24 hours x 365 days (always on) 306.6kW/year, total usage (1 charger) $0.149/kWh electric rate $45.68 per charger or $274.10 annual electric bill for six(6j chargers of course, Energy Saving Trust claims the chargers are essentially always on, whether you have the device connected or not. updated OP.
- detaro 4y agono phone charger is going to use the rated power if nothing is connected, I'd expect more like something in the range of 0.2-2W
- BOOSTERHIDROGEN 4y agoNewest Apple 35W Dual Charger “no-load power consumption of the charger at 220V 50Hz is 0.063W”[1] [1] https://www.chongdiantou.com/archives/157270.html https://www.chongdiantou.com/archives/157270.html