AndyLou Posted June 17, 2019 Share Posted June 17, 2019 Hi Could somebody recommend an inverter that would be suitable for powering a hairdryer? I might use it for charging a laptop but mainly it would be used once a day for a short period to dry the wife's hair. So nothing too sophisticated is required. Link to comment Share on other sites More sharing options...
BruceM Posted June 17, 2019 Share Posted June 17, 2019 https://forums.outandaboutlive.co.uk/forums/Motorhomes/Motorhome-Matters/Inverter-for-Hair-Dryer/48709/#M555804 Link to comment Share on other sites More sharing options...
bounty hunter Posted June 17, 2019 Share Posted June 17, 2019 Have you enough batteries to power it? John Link to comment Share on other sites More sharing options...
weldted Posted June 17, 2019 Share Posted June 17, 2019 You need app 28 amps @ 12 volt d.c. To produce 1 amp @240 volts a.c. I would suggest a pure sine wave inverter to produce (clean) power supply as some hair dryers have microprocessors. Get one that has at least a 50% higher rating than the maximum power of the dryer. A 600 watt dryer will take something like 70 amps, all be it for a short time. A fairly new good quality 100 amp leisure battery will give you at most 50 amps of usable power it is recommended that you do not let a battery fall below 50% discharge as damage may result. Link to comment Share on other sites More sharing options...
sshortcircuit Posted June 17, 2019 Share Posted June 17, 2019 weldted - 2019-06-17 9:30 PM You need app 28 amps @ 12 volt d.c. To produce 1 amp @240 volts a.c. I would suggest a pure sine wave inverter to produce (clean) power supply as some hair dryers have microprocessors. Get one that has at least a 50% higher rating than the maximum power of the dryer. A 600 watt dryer will take something like 70 amps, all be it for a short time. A fairly new good quality 100 amp leisure battery will give you at most 50 amps of usable power it is recommended that you do not let a battery fall below 50% discharge as damage may result. Pure sine for hair drier, come on get real. Hair driers now have microprocessors? thats interesting, Will they be the same things that my modified sine inverter powers my laptop, tv etc. Unfortunately a lot of hype about pure sine, but a far as I am aware electric tooth brushes are the only items that do not like modified sine, so I stick with the manual version Link to comment Share on other sites More sharing options...
veletron Posted June 17, 2019 Share Posted June 17, 2019 Hi I use this, works well, DC motor so fine on a 1KW modified sine wave inverter, but you'll need 200+ AH capacity if you wish to avoid seriously shortening the life of your batteries. https://amzn.to/2Iozr5b Nigel Link to comment Share on other sites More sharing options...
weldted Posted June 18, 2019 Share Posted June 18, 2019 You sarcastic comments are what stops people from posting, whilst everyone is entitled to their opinion good manners should prevail. If you bothered to read my post I suggested using pure sine wave, not that it was mandatory, it was stated that the inverter may be used for other purposes. If I don't agree with what someone else post I would put an alternative reply but refrain from dismissing their comments. Link to comment Share on other sites More sharing options...
sshortcircuit Posted June 18, 2019 Share Posted June 18, 2019 Yes, your ill mannered post is what puts people off posting. No more to say on matter as will not get involved with a spat. Link to comment Share on other sites More sharing options...
Charles Posted June 18, 2019 Share Posted June 18, 2019 Dyson's hairdryer might have electronic control. Anyway. I'd go for a pure sine wave personally. You can use it for anything then. I imagine power supply capacitors having a shortened life with a modified. Also motors and transformers run hotter. Link to comment Share on other sites More sharing options...
StuartO Posted June 18, 2019 Share Posted June 18, 2019 sshortcircuit - 2019-06-18 8:33 AM Yes, your ill mannered post is what puts people off posting. No more to say on matter as will not get involved with a spat. "Come on get real" was hardly a well mannered way for you to respond though, was it? Perhaps you were only writing carelessly rather than intending to be hurtful but even so, you should apoogise rather than bite back. If you can't take crticism take more care never to dish it out. Link to comment Share on other sites More sharing options...
weldted Posted June 18, 2019 Share Posted June 18, 2019 Regarding the hairdryer, renowned inventor Sir James Dyson had this to say: "Hairdryers can be heavy, ... by continuously relaying readings at a rate of 20 times a second to the main microprocessor?? Link to comment Share on other sites More sharing options...
AndyLou Posted June 19, 2019 Author Share Posted June 19, 2019 Well considering we have only 1 100ah battery it looks like I will have to pass on the invertor. Does anybody know if there are laptop charges that work straight from the 12v? Seems daft to convert DC to AC and then back to DC. Link to comment Share on other sites More sharing options...
BruceM Posted June 19, 2019 Share Posted June 19, 2019 Absolutely, it’s what we do. There are plenty on EBay (eg https://www.ebay.co.uk/itm/Universal-Laptop-Auto-Car-Charger-Adapter-12V-80W-For-DELL-HP-TOSHIBA-SONY/183835394999?epid=10024722847&hash=item2acd7183b7:g:LuoAAOSwjexbl14I) . Just check your current laptop mains charger to establish the voltage and current rating required (it’ll be written on the charger) and ensure that the unit you purchase can accommodate it. My Toshiba for example is 19v 3.42A . Link to comment Share on other sites More sharing options...
Alanb Posted June 19, 2019 Share Posted June 19, 2019 Andy&Lou - 2019-06-19 1:46 PM Well considering we have only 1 100ah battery it looks like I will have to pass on the invertor. Does anybody know if there are laptop charges that work straight from the 12v? Seems daft to convert DC to AC and then back to DC. May I congratulate you on making a wise decision. As regards a 12V PSU you may wish to consider this one. It is more expensive than that linked to above, but seems similar to the Kerio Energy Knight ,1 that I have used for many years. I have seen the Kerio Energy Knight (Taiwanese origin) marketed under several different brands, but green and blue coding for the output voltage selection seems to be a distinguishing feature Alan. Link to comment Share on other sites More sharing options...
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