New ask Hacker News story: Ask HN: On-Demand Phone Charger
Ask HN: On-Demand Phone Charger
2 by egberts1 | 4 comments on Hacker News.
When you have 6 phone chargers around the house, napkin-math is showing me $22.00/month in electric bill. Not to nitpick, but surely there is a charger out there in the marketplace that can apply electrical load once the iPhone/Android gets connected to the charger. That is assuming that Energy Saving Trust accurately assert that it is eating electric cost wether the device is connected or not. [1] Perhaps with a big zenier diode or something instead of an always-on wounded transformer coil sucking electricity … Is there such a thing? I could imagine some type of mechanical (or even electronic) relay to kick in that coiled transformer load but as a tiny consumer product? Does one exist? If so, how would one search for such a product on search engines? Napkin Math: 35W/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. [1] https://ift.tt/ynfrZk2
2 by egberts1 | 4 comments on Hacker News.
When you have 6 phone chargers around the house, napkin-math is showing me $22.00/month in electric bill. Not to nitpick, but surely there is a charger out there in the marketplace that can apply electrical load once the iPhone/Android gets connected to the charger. That is assuming that Energy Saving Trust accurately assert that it is eating electric cost wether the device is connected or not. [1] Perhaps with a big zenier diode or something instead of an always-on wounded transformer coil sucking electricity … Is there such a thing? I could imagine some type of mechanical (or even electronic) relay to kick in that coiled transformer load but as a tiny consumer product? Does one exist? If so, how would one search for such a product on search engines? Napkin Math: 35W/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. [1] https://ift.tt/ynfrZk2
Comments
Post a Comment