Tube Adapter
General Frequently Asked Questions About Laptop Adapters Products:
Choosing the right AC/DC adapter
Before you buy any AC/DC laptop adapter, please make sure the AC/DC laptop adapter will give you the correct voltage and suitable current output.
To find out the voltage & current, turn your laptop over and look for a label, sticker or writing which shows the voltage and current, it should look something like the examples below. The voltage figure will have a "V" after the Number i.e 19V and the current will have a "A" or "mA". i.e 3.15A, 950mA. You can also find these shown in a similar fashion on the original AC adapter if you have it. In the examples below the voltage & current has been marked with a red ring.
AC/DC Adapter Calculator
Enter the voltage and current then click calculate for the wattage
Enter Voltage V
Enter Current A
Adapter Wattage Required =
PLEASE NOTE: If the wattage requirement for your laptop is lower than the 60W or 90W output of the adapter, it will not damage your laptop, your laptop will only take the amount of power it requires. I.E. If your laptop needs 45W, then either the 60W or 90W will work OK. If your laptop needs 80W then you will need the 90W one as the 75W one will not be powerful enough.
Only if you were to plug a 19V adapter into a 15V laptop would you run the risk of damage. If in doubt please email us on our contacts page.
Information for AC laptop adapter.
AC Power Adapter can provide continuous power to your laptop/notebook computer and charge the laptop battery from AC power source such as electrical plugs on the wall. If you are looking for a power adapter which can power your laptop and charge the laptop battery from Car, you need looking for our Car (Auto) DC power adapter.
Information for Car (Auto) DC laptop adapter.
Our Car (Auto) DC Power Adapter is the compact, portable power solution for mobile users on the road, the DC power adapter can be used on vehicles with standard cigarette lighters (such as cars and boats) to provide continuous power to your laptop/notebook computers and recharge your batteries.
TOP
What is Alternating Current?
In electricity, alternating current (AC) occurs when charge carriers in a conductor or semiconductor periodically reverse their direction of movement. Household utility current in most countries is AC with a frequency of 60 hertz (60 complete cycles per second), although in some countries it is 50 Hz. The radio-frequency (RF) current in antennas and transmission lines is another example of AC.
More information on Alternating Current (AC):
An AC waveform can be sinusoidal, square, or sawtooth-shaped. Some AC waveforms are irregular or complicated. An example of sine-wave AC is common household utility current (in the ideal case). Square or sawtooth waves are produced by certain types of electronic oscillators, and by a low-end uninterruptible Power Supply (UPS) when it is operating from its battery. Irregular AC waves are produced by audio amplifiers that deal with analog voice signals and/or music.
The voltage of an AC power source can be easily changed by means of a power transformer. This allows the voltage to be stepped up (increased) for transmission and distribution. High-voltage transmission is more efficient than low-voltage transmission over long distances, because the loss caused by conductor resistance decreases as the voltage increases.
The voltage of an AC power source changes from instant to instant in time. The effective voltage of an AC utility power source is usually considered to be the DC voltage that would produce the same power dissipation as heat assuming a pure resistance. The effective voltage for a sine wave is not the same as the peak voltage. To obtain effective voltage from peak voltage, multiply by 0.707. To obtain peak voltage from effective voltage, multiply by 1.414.
What is Direct Current?
DC (Direct current) is the unidirectional flow or movement of electric charge carriers, usually electron. The intensity of the current can vary with time, but the general direction of movement stays the same at all times. As an adjective, the term DC is used in reference to voltage whose polarity never reverses.
In a DC circuit, electrons emerge from the negative, or minus, pole and move towards the positive, or plus, pole. Nevertheless, physicists define DC as traveling from plus to minus.
More information on Direct Current (DC):
Direct current is produced by electrochemical and photovoltaic cells and batteries. In contrast, the electricity available from utility mains in most countries is AC (alternating current). Utility AC can be converted to DC by means of a power supply consisting of a transformer, a rectifier (which prevents the flow of current from reversing), and a filter (which eliminates current pulsations in the output of the rectifier).
Virtually all electronic, digital device and computer hardware needs DC to function. Most solid-state equipment requires between 1.5 and 13.5 volts. Current demands can range from practically zero for an electronic wristwatch to more than 100 amperes for a radio communications power amplifier. Equipment using vacuum tubes, such as a high-power radio or television broadcast transmitter or a CRT (cathode-ray tube) display, require from about 150 volts to several thousand volts DC.
About the Author
Looking for a laptop battery?Welcome to http://www.notebook-laptop-batteries.com
Low price and High-quality batteries for you.
SPAS 12 chhoke tube adapter
 |
 two Adapter 6SN7 ECC88 tubes $49.00 Time Remaining: 22d 2h Buy It Now for only: $49.00 Buy It Now |
 Hickok CA 4 Tube Tester Adapter 5 Sockets 539C 600A 800 6000 750 752 533 539B $167.50 (21 Bids) Time Remaining: 2h |
 Quad Adapters EL60 EL34 tubes amplifier SUB $84.00 Time Remaining: 4d 17m Buy It Now for only: $84.00 Buy It Now |
 Hickok CA 4 Adapter EXTENSION CABLE Tube Tester 539B 539C Many Others $39.99 Time Remaining: 1d 16h 42m |
 Derale Tube Fin Engine Cooler Kit w Spin On Adapter $106.99 Time Remaining: 13d 9h 59m Buy It Now for only: $106.99 Buy It Now |
 Hickok CA 5 Adapter EXTENSION CABLE Tube Tester 539B 539C Many Others $49.99 Time Remaining: 1d 16h 45m |
 1pcsTube adaptor 6F8G to 6SN7 Socket NEW $22.99 Time Remaining: 15d 11h 20m Buy It Now for only: $22.99 Buy It Now |
 Vector Vacuum Tube Socket Extenders Adaptors $17.49 (2 Bids) Time Remaining: 2d 21h 4m |
 Pair NEW Tube Adaptor 6A3 to 6B4G UX4 AO8 $24.99 Time Remaining: 20d 13h 32m Buy It Now for only: $24.99 Buy It Now |
 Straight Tube Fittings Barbed Pipe Connector Adapter 83mm x 14mm $4.02 Time Remaining: 1h 33m |
 Two 6GH8A to 7199 Tube Socket Adapters with New 6GH8A Tubes $35.00 Time Remaining: 2d 13h 14m Buy It Now for only: $35.00 Buy It Now |
 Straight Tube Fittings Barbed Pipe Connector Adapter 83mm x 14mm $8.09 Time Remaining: 3h 27m |
 Two adapters 7N7 6SN7 tubes amplifier SUB $36.00 Time Remaining: 12d 23h 49m Buy It Now for only: $36.00 Buy It Now |
 1 3 Female Thread Pneumatic Air Quick Coupling Adapter for 5 32 x 15 64 Tube $4.35 Time Remaining: 3h 47m |
 Pair NEW Tube Adaptor 6AR6 to 6L6 6386 to 6L6G AO8 AO8 $24.99 Time Remaining: 1d 10m Buy It Now for only: $24.99 Buy It Now |
 Straight Pipe Fittings Barbed Tube Connector Adapter 78mm x 11mm $4.72 Time Remaining: 7h 17m |
 7199 Vacuum Tube Adapter 6GH8A Tube + Adapter NEW $26.00 Time Remaining: 17d 12h 52m Buy It Now for only: $26.00 Buy It Now |
 TELEPHOTO + Wide Angle FOR Panasonic Lumix Dmc LX3 CAMERA Adapter Tube $28.49 Time Remaining: 35m Buy It Now for only: $31.49 Buy It Now |
 6SN7 6SL7 to 12AU7 12AX7 socket converter adaptor vacuum tube adapter 1 piece $13.50 Time Remaining: 3h 21m Buy It Now for only: $13.50 Buy It Now |
 WIDE ANGLE FOR CANON G7 G9 + 20X TELEPHOTO Camera Adapter TUBE $32.77 Time Remaining: 35m Buy It Now for only: $36.21 Buy It Now |
 Tube adaptor 807 to 6L6 Socket NEW $24.99 Time Remaining: 12d 4h 56m Buy It Now for only: $24.99 Buy It Now |
 58MM 045X WIDE ANGLE + 2X TELEPHOTO + CAP FOR CANON G7 CAMERA ADAPTER TUBE $28.49 Time Remaining: 35m Buy It Now for only: $31.49 Buy It Now |
 Eumer Tube Fly Adapter Tool $17.95 Time Remaining: 26d 18h 35m Buy It Now for only: $17.95 Buy It Now |
 WIDE Angle Fisheye 021X LENS + TUBE ADAPTER FOR Canon Powershot A520 $56.52 Time Remaining: 35m Buy It Now for only: $62.46 Buy It Now |
 Alfa Tube UN 80211n Outdoor Wi Fi USB Adapter N Male $39.97 Time Remaining: 5d 18h 50m Buy It Now for only: $39.97 Buy It Now |
 045X WIDE ANGLE + 2X Telephoto Lens FOR KODAK Z812 CAMERA ADAPTER TUBE $28.02 Time Remaining: 35m Buy It Now for only: $30.96 Buy It Now |
 TUBE Socket Adapter for russian 6N2P ECC83 12AX7 $14.99 Time Remaining: 24d 11h 35m Buy It Now for only: $14.99 Buy It Now |
 UV CPL Polarized FLD Filter Lens kit Hood Cap adapter tube for Canon G10 G11 G12 $23.74 Time Remaining: 44m Buy It Now for only: $26.24 Buy It Now |
 Two Adapters 5U4G U52 274B 5Z3 tubes SUB $11.99 Time Remaining: 9d 5h 58m Buy It Now for only: $11.99 Buy It Now |
 UV ultraviolet CPL UV Lens Filter Kit + adapter tube for Panasonic Lumix DMC LX3 $8.54 Time Remaining: 55m Buy It Now for only: $9.44 Buy It Now |
 QUAD NEW Tube Adaptor 6AR6 to 6L6 6386 to 6L6G AO8 AO8 $49.99 Time Remaining: 1d 23m Buy It Now for only: $49.99 Buy It Now |
 2X TELEPHOTO LENS + ADAPTER TUBE + Cap Keeper FOR PANASONIC LUMIX FZ18 FZ28 FZ38 $20.80 Time Remaining: 55m Buy It Now for only: $22.98 Buy It Now |
 30MM Tube Scope Adapter with Two Weaver Bases $13.50 Time Remaining: 20d 19h 43m Buy It Now for only: $13.50 Buy It Now |
 WIDE ANGLE FISHEYE 021X LENS + TUBE ADAPTER FOR NIKON COOLPIX 8800 $58.42 Time Remaining: 55m Buy It Now for only: $64.56 Buy It Now |
 1 Dental High Speed Handpiece Tube Adapter 4 to 2 Holes $15.99 Time Remaining: 1d 4h 20m Buy It Now for only: $15.99 Buy It Now |
 045X High Definition Wide Angle Macro LENS + 37MM TUBE ADAPTER FOR CANON A95 $16.14 Time Remaining: 55m Buy It Now for only: $17.84 Buy It Now |
 Hawks Leica M lens to Sony NEX E Mount Camera Marco tube helicoid adapter Ver 2 $192.80 Time Remaining: 28d 9h 34m Buy It Now for only: $192.80 Buy It Now |
 2X TELEPHOTO LENS + CAMERA ADAPTER TUBE FOR KODAK Z612 IS 58MM $18.52 Time Remaining: 55m Buy It Now for only: $20.46 Buy It Now |
 Two adapters for 6094 tube EL84 socket amplifier $39.10 Time Remaining: 4d 17m Buy It Now for only: $39.10 Buy It Now |
 WIDE ANGLE Tele Lens TUBE ADAPTER FOR KODAK DX6490 CAMERA $29.92 Time Remaining: 55m Buy It Now for only: $33.06 Buy It Now |
 6F8G to 6SN7 Tube Adapter pair $39.00 Time Remaining: 1d 9h 16m Buy It Now for only: $39.00 Buy It Now |
 045X + 2X TELEPHOTO LENS FOR Fuji Finepix S7000 S602 6900 CAMERA ADAPTER TUBE $27.54 Time Remaining: 55m Buy It Now for only: $30.44 Buy It Now |
 NEW 25INCH 25 SSQV SQV BOV TUBE BLOW OFF VALVE TUBE PIPE FLANGE HKS ADAPTER $18.58 Time Remaining: 5d 32m Buy It Now for only: $18.58 Buy It Now |
 72MM Filter Adapter TUBE FOR SONY H9 H7 DSC H50 CAMERA FOR USE WITH LENS $15.19 Time Remaining: 55m Buy It Now for only: $16.79 Buy It Now |
 034X Wide Fisheye Macro Lens + 52MM TUBE ADAPTER FOR FUJI FINEPIX S7000 $33.99 Time Remaining: 7d 18h 22m Buy It Now for only: $33.99 Buy It Now |
 Lens Adapter Adaptor Tube for Olympus XZ 1 $9.99 Time Remaining: 1h 2m |
 NEW AMEDA SPARE REPLACEMENT PARTS TUBING ADAPTER VALVE DIAPHRAGM FLANGE CAP $13.95 Time Remaining: 23d 16h 49m Buy It Now for only: $13.95 Buy It Now |
 OTC 313444 FORD BALL JOINT ADAPTER Receiver Tube 2 7 8 OD x 2 5 8 x 2 7 8 $74.43 Time Remaining: 1h 37m |
 Pair NEW Tube Adaptor 5X4G to 5U4 5X4 to 5U4G AO8 AO8 $24.99 Time Remaining: 21d 9h 21m Buy It Now for only: $24.99 Buy It Now |
 Leitz Macro Adapter 16469Y M mount OUFRO Extension Tube $69.00 (1 Bid) Time Remaining: 2h 32m |
 45 Tube Adapter Use a 46 or 47 inplace of 45 PAIR $39.00 Time Remaining: 24d 19h 16m Buy It Now for only: $39.00 Buy It Now |
 Fotodiox Nikon Macro Extension Tube Set Kit for Extreme Close-up, Fits Nikon D1, D2, D3, D3x,D3s, D100, D200, D300, D300s, D700, D40, D40x, D50, D60, D70, D70s, D80, D90, D3000, D3100, D5000, D7000 List Price: Sale Price: $9.95 You save: $20.00 (67%)  Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionYou can use the camera mount coupling adapter and lens mount coupling adapter alone or with combination of any or all three extension tubes for extreme Macro photography. Since there is no other optical components been added, the image preserve the original optical property of the lens...  |
 Softride 26373 Top Tube Adapter List Price: Sale Price: $26.99 You save: $3.00 (10%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionSoftride Top Tube Adapter easily adapts most all step-through frame style bicycles to easily fit onto upright style behind the vehicle racks including softride dura, dura assist, element, and trunkster racks... |
 Value Plastic PMS230-210-6 Barbed Tube Fitting Threaded Adapter Panel Mount Reducer 1/4-28 UNF X 1/8" (3.2 mm) and 1/16" (1.6 mm) Tube ID Natural Polypropylene (pack of 25) Sale Price: $9.60 Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionValue Plastics manufactures plastic tubing fittings and connectors to join tubing to commonly-used threaded ports. Products are available in over 100 configurations in nylon, polypropylene and PVDF resins, with straight, elbow and tee connections for tubing... |
 Yakima Tube Top Women's or Dual Suspension Bike Rack Frame Adapter List Price: Sale Price: $31.50 You save: $3.50 (10%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionDoes your bike's top tube prevent you from mounting your bike properly on your rear hitch rack? Turn to the Yakima TubeTop adapter, which keeps your bike mounted solidly on single or dual mast mounts. The adapter installs directly on your bike, with one molded collar attaching to your bike stem and the other to the seat post... |
 Shop-Vac 9068700 Universal Tool Adapter List Price: Sale Price: $10.16 You save: $2.63 (21%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionThe Shop-Vac universal tool adapter allows you to connect virtually any power tool with an exhaust port to a Shop-Vac wet/dry vacuum. With a 1-to-2-inch diameter range, the adapter custom fits onto any vacuum cleaner's standard hose end... |
 58mm Two Piece Lens Adapter for Canon Powershot G10, G11 (an alternative to the LA-DC58K) Sale Price: $9.69 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThis steel dual square lens adapter set with 58mm threads is an pick to a a single square cosmetic Canon LA-DC58K with 58mm threads for a G10, G11 as well as G12 |
 Tube Spinner Spool Adapter Sale Price: $8.99 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThis attachment for most sewing machine spindles can hold the larger thread tubes containing 1,200 yards. The tube of thread fits onto the adapter and then the spinner fits on the spindle. |
 Medela Pump in Style and New Pump in Style Advanced Breast Pump Tubing - Pack of 2 Sale Price: $14.54 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionRetail pack of two new tubings for Medela Pump in Style Breastpump released after July, 2006, replacement for Medela's tubing part number: #8007212, #8007071, #8007156 (*Please note: before July 2006, both ends need adaptor, after that, only one end... |
 Weighmax 4819-75 Electronic Digital postal shipping scale, Batteries and AC Adapter Included Sale Price: $25.90 Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionDimensions 9.4" X 8.1" X 2.8" (24.0cm X20.5cm X 7.5cm) |
