Powering a 5W USB powered computer?

asteroids
asteroids Registered Users Posts: 17 ✭
in Solar Beginners Corner #1
I'm looking for a 12V to 5V converter that will keep going through a complete charging cycle. Suggestions? Ditto for a low power inverter, under 100W?
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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #2
    Re: Powering a 5W USB powered computer?

    You may need to buy a DC-DC converter with a wide input range, and a nice clean 5VDC output. For less than 10W load, it should not be too expensive.
    here's a $45 90% eff. one http://www.digikey.com/product-detail/en/PYB15-Q24-S5-T/102-3185-ND/4477443
    just a starting point
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

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  • zoneblue
    zoneblue Solar Expert Posts: 1,220 ✭✭✭✭
    #3
    Re: Powering a 5W USB powered computer?
    mike95490 wrote: »
    You may need to buy a DC-DC converter with a wide input range, and a nice clean 5VDC output. For less than 10W load, it should not be too expensive.
    here's a $45 90% eff. one http://www.digikey.com/product-detail/en/PYB15-Q24-S5-T/102-3185-ND/4477443
    just a starting point

    Any manner of ebay iphone car chargers?

    Else i use tons of these (good for 2amps):

    http://dx.com/p/mini-dc-dc-voltage-stabilizer-regulator-module-red-126106
    1.8kWp CSUN, 10kWh AGM, Midnite Classic 150, Outback VFX3024E,
    http://zoneblue.org/cms/page.php?view=off-grid-solar


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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #4
    Re: Powering a 5W USB powered computer?
    zoneblue wrote: »
    Any manner of ebay iphone car chargers?

    Else i use tons of these (good for 2amps):

    http://dx.com/p/mini-dc-dc-voltage-stabilizer-regulator-module-red-126106

    - Input: DC 4V-40V
    - Output: DC 1.5V-35V (adjustable)
    - Max output current: 3A
    there you are ! And the price is nice at <$5
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

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  • asteroids
    asteroids Registered Users Posts: 17 ✭
    #5
    Re: Powering a 5W USB powered computer?

    Thanks all for the suggestions. How about a low power inverter?
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  • westbranch
    westbranch Solar Expert Posts: 5,183 ✭✭✭✭
    #6
    Re: Powering a 5W USB powered computer?

    How low is low enough? 5W?
     
    KID #51B  4s 140W to 24V 900Ah C&D AGM
    CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM 
    Cotek ST1500W 24V Inverter,OmniCharge 3024,
    2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
    Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
    West Chilcotin, BC, Canada
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  • asteroids
    asteroids Registered Users Posts: 17 ✭
    #7
    Re: Powering a 5W USB powered computer?

    The other device is a 120V gizmo, that draws about 50W and if understand it correctly has a max draw of about 100W or so. So I'm looking for a low power inverter that I can toggle on/off or something with a low standby current.
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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #8
    Re: Powering a 5W USB powered computer?
    asteroids wrote: »
    The other device is a 120V gizmo, that draws about 50W and if understand it correctly has a max draw of about 100W or so. So I'm looking for a low power inverter that I can toggle on/off or something with a low standby current.

    That could be a morningstar Suresine 300 inverter. has a nifty on/off control, and very low standby/idle/inverting losses
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

    · Share on Twitter

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