what are the materials for the science project named electric charger?
idn
You need to make an assumption that your project is to demonstrate how a battery is charged.
Get these materials:
1. a DC power supply of the type used to power small electronic devices.
2 an assortment of resistors, low values
3 a small VOM meter, with a DC current scale
4 some rechargable batteries, not Li-on.
5 an LED or flashlight bulb
about 6 alligator clips
What to do:
Cut off the DC connector and peel back the insulation.
Find out what side is plus and ground using the meter (voltage).
You need to connect the ground of the power supply to the ground of the battery. Alligator clips work.
Connect the plus wire to the resitor and through it, through the meter, to the plus side of the battery.
The current should read between 20 mA and 200 mA and the battery should get a little warn, but not hot.
You should measure the battery voltage at the start, then charge it at about 100 mA. Then check it again and you see it got charged, because the voltage went up.
Then you can show the discharge of the battery as it lights the light or the LED.
If the current is too high then try a larger value of resistor. Measure resistors with the ohms scale of the meter.
If the current is too low change to a resistor with fewer ohms.
Charging works best if the power supply voltage is a bit higher than the battery you choose. Experiment with as many as you can get. Expect to recycle them when you are done.
Revolectrix Powerlab 8 RC Battery Charger Review
|
|
SCHUMACHER 750 A CAR BATTERY JUMP STARTER BOX AIR COMPRESSOR USB CHARGER XP750C $37.35 |
|
|
Oster Electric Rechargable Wine Opener/Cork Remover Bar Tool with Charger $9.99 |
|
|
metrokane RED ELECTRIC RABBIT 9 1/4″ CORKSCREW with foil cutter & CHARGER CORD $19.99 |
|
|
NEW Automotive Car 12 V Battery Protector Winterize Care Trickle Float Charger $9.99 |
|
|
DR Whisper Lite electric lawn mower battery charger $25.00 |
|
|
Remington Wet Dry Dual track 55 Electric Shaver Razor & Charger Model# RR-55DT $8.99 |
|
|
Razor Electric E Scooter Battery Charger 24 Volts NEW $13.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
Dodge Charger SRT8 Design Long Sleeve T Shirt S-XL $17.95 |
|
|
INVACARE Electric Wheelchair Soneil Onboard Battery Charger Pronto M51 M71 $69.95 |
|
|
LOT (2) Schumacher 6/12 VOLT 15 AMP CAR BATTERY CHARGER BOAT RV MAINTAINER XCS15 $51.70 |
|
|
SCHUMACHER 750 A CAR BATTERY JUMP STARTER AIR COMPRESSOR BOOSTER CHARGER XP750C $50.89 |
|
|
NEW THOMPSON ELECTRIC SCOOTER w/CHARGER & FREE EXTRAS!! $979.00 |
|
|
solar electric fence charger energizer 12 volt power wizard $154.00 |
|
|
Oster 4208 Inspire Electric Wine Opener with Wine Chiller … |
|
|
Koolatron Multi-Purpose Adapter 110AC to 12 Volts DC ( Model AC-15) $29.99 Power your Koolatron(r) Cooler/Warmer at home or office with this AC Adapter. For use with all Koolatron(r) 12V Coolers and warmers and other 12V items. Over-load and over-charge protected…. |
|
|
Hamilton Beach 76500 Walk ‘N Cut Cordless Can Opener $9.99 This easy-grip can opener from Hamilton Beach/Proctor-Silex opens any size can using only one hand. Attach it to your can and watch it go – it walks, cuts then shuts itself off automatically. Plug it in for easy recharging overnight. The removable cutting lever lifts off for easy cleaning. The compact-size can opener stores in your drawer…. |
|
|
Astro Creep: 2000 — Songs of Love, Destruction, and Other Synthetic Delusions of the Electric Head $6.40 All products are BRAND NEW and factory sealed. Fast shipping and 100% Satisfaction Guaranteed…. |
|
|
Supersexy Swingin Sounds $2.43 All products are BRAND NEW and factory sealed. Fast shipping and 100% Satisfaction Guaranteed…. |
|
|
Belkin Mini Surge Protector Dual USB Charger $12.99 Protect your electronic devices while traveling…. |
|
|
Black & Decker NST2118 12-Inch 18-Volt Ni-Cd Cordless Electric GrassHog String Trimmer/Edger $82.74 2 TOOLS-IN-ONE THAT FEATURES MORE POWER DURABILITY & IS EASY TO USEEXCLUSIVE POWERDRIVE TRANSMISSION DELIVERS MORE POWER FROM THE MOTOR TO THE CUTTING STRING SO THE JOB CAN GET DONE FASTERGREAT CUTTING RESULTS WITHOUT THE MESS & HASSLES OF GASINSTANTLY STARTS EVERY TIME WITH THE PULL OF A TRIGGEREASILY CONVERTS FROM A TRIMMER TO AN EDGERINCLUDES TWO 18V BATTERIES FOR DOUBLE THE RUN TIMEUPC : 88591… |
|
|
Black & Decker HPB18-OPE 18-Volt Slide Pack Battery For 18-Volt Outdoor Cordless Power Tools $32.98 18V slide battery pack for use with all Black & Decker 18V outdoor power tools; for interchangeable convenience and value…. |
|
|
Charger Nation – The New Electric Boys of Surf City $25.95 This product includes a DVD which features the collegiate highlights of RB LaDainian Tomlinson, LB Shawne Merriman, OT Marcus McNeil, WR Demetrius Byrd, OL Louis Vasquez, CB Antonio Cromartie, LB Kevin Burnett, RB/KR Darren Sproles, DT/DE Luis Castillo, LB Tim Dobbins, DB Eric Weddle, TE Legend Kellen Winslow and many of the new young rising stars of San Diego…This product is manufactured on dem… |
|
|
Philips Sonicare HX6013/90 ProResults Brush Head Standard … |