Battery Led
We wish to light up an LED from a 12Volt car battery, the spec, sheet tells us that the maximum current that t?
We wish to light up an LED from a 12Volt car battery, the spec, sheet tells us that the maximum current that this large LED can handle is 50mA. Assume the LED will drop 0.7 volts across it. What is the lowest standard value that the resistor can be without exceeding the maximum current of the LED.
Just get a potentiometer, and only turn it up enough to light it. I guess you could measure that, and then buy a resistor
A netbook is a lightweight and small version of the traditional laptop aimed at internet usage and emailing.
2009 has been the year of the netbooks, as new products coming to market from the manufacturers like Sony. Its Vaio P offers wider choices and features and compete with established brands like the Acer netbook.
So if you are planning to buy a cheap laptop this season, here are some options for you.
Acer Aspire One D150
Acer has recently introduced the new 10.1-inch Aspire One D150 at a price point of Rs. 20,999. After the 8.9-inch Aspire One, Acer hits the netbook segment with a 10.1 WSVGA LCD display offering 1024 x 600 pixels resolution and Acer CrystalBrite technology.
It sports the 1.6GHz Intel Atom N270 processor, a Intel 945GSE chipset that features Intel GMA950 graphics. Also, it comes with 1GB DDR2 memory which can be expanded to 2GB DDR2 memory, Wi-Fi, Bluetooth, Acer Crystal Eye Webcam, and USB ports. The notebook has a multi-touch trackpad and a six-cell Li-ion battery which promises up to five hours of battery life.
For a change, Acer includes Windows XP with Service Pack 3 pre-loaded in the AOD150 as compared to Linpus Linux Lite OS available in previous models.
Samsung NC20
The Samsung NC20 is a Netbook that uses the VIA Nano Processor U2250 (1.3+GHz, 800MHz), and includes 1 GB of memory as standard. The 12.1" screen size is larger than typical for this class of ultra portable PC.
The LED-backlit screen has a glossy display with a resolution of 1280 x 800 pixels. An external display can be used through the standard VGA connector.
Other features include a full-size keyboard which is coated with anti-bacterial Silver Nano ions, with standard 18.5mm key pitch between keys, memory slot for 2GB RAM, and standard internal hard drive is a SATA 160 GB, Ethernet, 802.11 b/g/n Wi-Fi, Bluetooth, 3 USB 2.0, SD card reader, Stereo speakers, headphone/microphone jacks. It carries a price tag of $549.
Lenovo IdeaPad S10
The IdeaPad S10 is a line of consumer-oriented netbook which offer a variety of colors like pearl white, black, red, blue, and pink. They feature a 10.2" TFT Active Matrix 1024x600 display with a 80 or 160GB hard disk drive and 512MB or 1GB DDR2 RAM, both of which are easily upgraded via a user access panel on the bottom of the netbook.
Priced at Rs 20,990, the netbook packs 1.6-GHz Intel Atom N270 processor and runs on Windows XP Home edition. They support 802.11 b/g wireless networking and come with two USB ports, an Expresscard expansion slot, a 4-in-1 media reader, weighs 1.25 kg, a VGA output, a 1.3 megapixel webcam and an in-built mic.
HP Mini 1109TU
It is a small netbook with 10.1-inch LED backlit widescreen display, 2USB ports, headphone-out and mic combo jack. It weighs just 1.09 kg with a price tag of 21,490 plus taxes makes an ideal choice for the consumers.
HP Mini 1109TU runs Windows XP Home and powered by Intel Atom N270 1.6GHz processor with Intel Graphics Media Accelerator 950, 1GB memory capacity and 80GB storage. It also sports Wi-Fi, Bluetooth, Norton AV and in-built memory card reader.
Sony Vaio P
Sony Vaio P comes with either a 1.33 GHz Intel Atom Z520 or a 1.6 GHz Atom Z530 processor, and 2GB DDR2 memory with 533 MHz FSB. It has an 8" LED-backlit display with native resolution of 1600x768 and weighs just 1.4-1.7 pounds. It comes preinstalled with Windows Vista Home Premium or Windows Vista Business, dependent on model.
The Sony Vaio P is available in four color options; Black, Red, Green, and White. The other features includes an integrated webcam, built-in GPS, Bluetooth, 802.11 b/g/n wireless, mobile broadband, and an Intel Graphics Media Accelerator 500 video card but there is no optical drive. Dependent on the model, storage is either a 60GB hard disk drive or 64GB or 128GB solid state drive. At a price tag of $900, user could not call it a netbook.
LED Battery Monitor
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Fulcrum Products Light-It 6 LED Porch Light with Motion Sensor $21.43 If you are looking for a high-powered floodlight to provide added safety and security to the exterior of your home, look no further than the Outdoor Wireless Motion Activated LED Floodlight. This floodlight is perfect for the average do-it-yourselfer as it runs on batteries, so no outlet, wiring, or professional installation is required. It has a weatherproof casing that was designed to withstand ... |
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12 Flickering Candle Set Runs on Batteries Flickers Like a Real Candle Battery Operated Tealight Candles Flameless Candle Wedding Tea Light One Dozen Long Lasting Batterry Life $4.90 Flame free, smoke free, worry free candles (set of 12) Battery operated (batteries included) Flickering LED light realistically simulates burning candle These tealights will fit in any votive or tealight holder. On/Off switch on bottom of each candle... |
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Set of 12 Battery Operated Realistic Flickering 'Flame' Amber LED Tealight Candles FLAMELESS & SMOKELESS $7.39 Flame free, smoke free, worry free candles (set of 12) Battery operated (batteries included CR2032) Flickering AMBER LED light realistically simulates burning candle. These tealights will fit in any votive or tealight holder. On/Off button on the bottom of each TeaLight. Featuring 'soft silicone' tips for superior light dissipation.... |
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Streamlight 65030 Stylus AAAA Replacement Batteries, 6-Pack $3.94 Pack includes 6 AAAA Batteries. Perfect for use with the Streamlight Stylus LED Penlight.... |
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Yuasa - 2-Pack of AA Ni-MH Rechargeable Batteries (2700mAh) $5.49 Yuasa high-capacity AA batteries provide superb amounts of clean, fresh energy to any device that uses AA batteries. Rechargeables save the environment because there is no need to throw them out when they are depleted. Ni-MH batteries such as these can be recharged fully or partially up to 1000 times, and occasionally beyond, without experiencing "memory effect." Excellent for high drain devices s... |
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Zadro Next Generation LED Lighted Vanity Mirror (1X to 5X) Model No. LEDV45 $44.50 Buy Zadro Mirrors - Zadro Next Generation LED Lighted Vanity Mirror (1X to 5X) Model No. LEDV45... |
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Garmin Forerunner 205 Standard Red LED Wall / AC / Home Charger! $5.99 Garmin Forerunner 205 Standard Red LED Wall / AC / Home Charger!... |
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Dual Power Li-Ion Battery Charger for the LPE6 Battery For Canon EOS 5D Mark II, 7D - Charge Two Batteries At Once *** Includes Accessory Bag $34.99 Stop lugging around all of those chargers and waiting around for each battery to finish charging before! Charge two batteries at the same time on the same charger without increasing the charge time for either battery! Each battery is monitored and controlled individually on a separate circuit, so it operates like two high-end battery chargers plugged in side by side. No more waiting around until y... |
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Olympus DS-2400 Dictation recorder (142015) $299.99 RECORDER, DS-2400, DIGITAL VOICE,... |
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Rayovac SE3DLN Sportsman Extreme 300-Lumen 3D-Battery LED Lantern $25.00 Rayovac's SE3DLN has an energy efficient LED that never needs to be replaced. With an EZ find light, a tent hook, and water resistant finish, there is no reason to go on your next camping trip with out it. Features 3 light modes: high, low, and strobe. 150 hour battery life. Carrying high power LEDs, machined from aircraft grade aluminum, and sporting a high end attitude, this light is Xtreme.... |
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Streamlight 66118 Stylus Pro Black LED Pen Flashlight with Holster $15.95 Penlights Type: Penlight Power Source: Disposable Battery Battery Type: AAA Number of Batteries: 2 Color: Black Length: 5.300 In., 5-3/8 Material: Aluminum Trade Name: Stylus Pro... |
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Planet Bike 3018-1 Rack Blinky 5- 5 LED Tail Light with Rack Mount and Batteries $14.75 The Planet Bike BRT-5 Taillight features a reflector integrated into the lens and Scotchlite reflective side strips. Features: Soft-touch flash/constant/off switch... |
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LED Bubble Gun - Funny Play Set - Battery Operated - Background Design may vary $4.70 LED Bubble Gun - Funny Play Set - Battery Operated. Color and Background Design may vary... |
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LED Bubble Gun - Funny Play Set - Battery Operated - Background Design may vary $4.79 LED Bubble Gun - Funny Play Set - Battery Operated - Background Design may vary... |
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HQRP Solar Power Controller 10Amp 150W with Digital LED Display plus HQRP Coaster $29.91 Products trademarked HQRP® are marketed and sold exclusively by Osprey-Talon. Regulations point: 14.4 Volts; Low voltage Disconnect: 11.1V Volts; Low voltage Reconnect: 13.1 Volts; Microcontroller digital accuracy; Type of Charging: Series PWM & stat of charge(SOC); 4 Stages: equalization, PWM, Boost and Float, temperature compensated charging; Electronic protections: Short circuit and over curre... |
