Electronics > Projects, Designs, and Technical Stuff
USB charger circuit for car
tooki:
--- Quote from: mc172 on April 04, 2019, 09:04:39 pm ---That's a fair point that I hadn't considered!
--- End quote ---
... and this is why every single summer, dogs and small children die inside locked cars. People do not understand that it can take as little as 10-15 minutes to reach lethal temperatures inside the car.
As for this charger, at an ambient temperature of 24C, it only takes an hour in the sun to reach 50C. So you can imagine how after a whole day, it could reach a lot more.
https://www.t-online.de/leben/familie/kleinkind/id_69606574/so-schnell-wird-hitze-im-geparkten-auto-lebensgefaehrlich.html
https://www.dogingtonpost.com/how-hot-does-it-really-get-inside-a-parked-car/
mc172:
I'm aware of the issues of pets and children left in cars and I think that people that subject their pets to such torture should be subjected to it themselves, swiftly followed by castration - I just hadn't thought about the usage case where the car either wasn't running or had nobody in it, i.e. without A/C running or windows down, car moving, direct sunlight etc. as is the usual nature of a hobby device where the OP doesn't specify anything other than it's a Fiat Panda. ;)
Charybdis:
--- Quote from: tooki on November 20, 2019, 10:58:09 pm ---
--- Quote from: mc172 on April 04, 2019, 09:04:39 pm ---That's a fair point that I hadn't considered!
--- End quote ---
... and this is why every single summer, dogs and small children die inside locked cars. People do not understand that it can take as little as 10-15 minutes to reach lethal temperatures inside the car.
As for this charger, at an ambient temperature of 24C, it only takes an hour in the sun to reach 50C. So you can imagine how after a whole day, it could reach a lot more.
https://www.t-online.de/leben/familie/kleinkind/id_69606574/so-schnell-wird-hitze-im-geparkten-auto-lebensgefaehrlich.html
https://www.dogingtonpost.com/how-hot-does-it-really-get-inside-a-parked-car/
--- End quote ---
I don't think you should worry that much as this charger will be used for a maximum of 3 hours straight, twice a week in the worst scenario.
I consider myself as a very pessimistic person but I think you are worrying a bit too much ;) as I will use this charger only when I'm driving, I don't want to left my phone in the car charging for a limitless amount of hours.
Oh and I don't have any dogs and kids :-DD
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