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Consumer Electronics

Ask questions here about the electronics you use every day: from phones and computers to kitchen appliances and radios.

4,952 Questions

Do cars use disposable batteries or rechargeable batteries?

The battery that starts the engine and runs all the electronics is a rechargeable battery. The only disposable battery may be the one in the remote for the car.

How old led lights are?

LED technology, such as the little red LEDs used to display numbers in calculators 30-40 years ago, have been around since the 1960s but LED lighting as a replacement for the original, inexpensive, reliable (and admittedly less efficient) incandescent bulb has been around since only about 2008. The biggest problem with LED lighting is that they can produce only a narrow range of frequencies of light and, thus, need to be modified by one means or another to produce white or more natural light. This can be accomplished by combining LEDs emitting red, green, and blue in very close proximity to each other (such as a pixel operates on a modern computer monitor or TV screen) to simulate white light or by use of a phosphor coating within the bulb to absorb certain colors and emit light that is at a more desired wavelength.

In Drawn to Life how does the mayor die?

It's a long story. Mari is feeling all emotional and shaky, and doesn't think she's up to being Mayor someday. She runs out on her dad to get some time alone. The Mayor, who keeps the Book of Life with him all the time for whatever reason, goes over to the gate to the Forest World and thinks he hears Mari sneaking around in the trees. He calls out to "her" and who is it but Wilfre! He assaults the Mayor, steals the Book of Life, disappears into Shadow Lair, and the Mayor understandably goes into shock. He stays in shock and unconscious until you rescue Dr. Cure, who uselessly pronounces that there is nothing she can do. Then, his body disappears and Mari blames you, the hero, for his death. It's quite the tragic tale.

How do you get base system device drivers for dv6408nr?

The base system device drivers for the HP Pavilion dv6408nr notebook PC can be obtained from Hewlett Packard. This information is available on their website.

What is the story in fatal frame 2?

it is about two twins who found the lost village when a ceremony went wrong and disappeared. the twins get separated and one of them tries to find the other one but found them her but then has to kill here then she turns into a butterfly then she tries to chase her but ends back where she was then it ends. i have seen the walk through on you tube so see there or play it yourself.

Removing battery acid from a flashlight?

Flush with lots of water, neutralise with weak solution of sodium carbonate.

Mario

Don't forget to take into account whether or not it is from an alkaline battery. If so, you may need to neutralize with a weak acid rather than a base. Inquire further on another site. -Matt

Does a magnetic fIEld have an effect on a capacitor placed in between the plates?

Does a magnetic field have an effect on a capacitor when it is placed between the plates? Yes, a magnetic field between the plates of a capacitor would have some effect. Without more information it is difficult to determine how much.

Do magnets affect microchips?

Yes, they mess with the connections, much in the same way they kill computers.

When is the sidekick slide coming out?

it comes out in mid-November! :P.

i talked to someone at t-mobile, and that's what they said.

How can you generate your own electricity and save?

You may or may not save generating your own electricity. First don't forget to include materials and installation costs. In many cases it takes 20 to 30 years to recover these costs before you begin to save anything. If you don't plan on living in the house that long, you lost money and some future owner will get any savings if there are any.

What type of attack might this be if you answer your work phone and the person on the other end asks you to participate in a phone survey As part of the survey the caller asks personal questions?

In one context, it may be Social Engineering. However, when a person on the phone asks personal questions this might be the type of attack that could lead to identity theft. This type of attack is a criminal act not a tort. People should be cautious about answering ANY personal questions when *you* did not initiate the phone call. Do not give your name, address, family names, pet names, your email address, and never, ever give your Social Security Number OR Banking information. Each piece of information gives the caller details about you, through which they can build a profile about you, and research you via the Internet. Never give info if promised a gift for doing the survey. The only 'gift' you'll get is a stolen identity.

How do I clean a device where AA batteries leaked?

Clean it using a Q-tip and some cloth, but there are still some residue left you can use a mechanical removal, like a wooden sticks and glass fiber pens, and do a final cleanup with fine sandpaper or a pencil eraser depending on the condition.

What technologies were available 20 years ago?

About the sames ones as we have now, but many products were still much too expensive to be available to the public. These products were custom made at high prices for the military, government, and industrial users.

What does the Y Pb Pr cables do and mean?

  • What do the Y and Pb and Pr cables do and mean?

    What the Cables Do and Mean. Y=Green/sync, Pb=blue, Pr = red. These are video cables where the colors have been separated into it basic Green, Blue and Red signals. Makes it easier for the digital... Read More

How do you remove a tape stuck in a Sony camcorder?

TRY THIS: Open the tape door on the bottom. LEAVE IT OPEN. Power off your camcorder and remove the battery. With the battery removed, move the power switch to ON. LEAVING THE POWER ON AND THE TAPE DOOR OPEN, replace the battery. The tape should eject without damage. This works for many other models as well.

Difference between jfet and mosfet?

hi

Main differences are,

Bipolar Junction Transistor:

switching speed is low;switching loss is more; conduction loss is less; frequency of switching is less

we can use as amplifier;Current control; conduction due to electron & holes

Junction field Effect Transistor:

it an unipolar; switching speed is high;so loss is less

voltage control;

Metal oxide semiconductor fet:

it nothiug bt fet, most of time v used for switching device in Smps do to power range

A BJT is a bipolar transistor in the sense that there are two types of charge carriers in them. In npn trnsistor the primary carrier in the hole and in pnp the electron. In JFET there is only one type of carrier. In n-channel case the carrier is elctron and in p-channel hole. So JFET is unipolar in that sense.

BJT is a current controlled device as the input current is amplified subjected to the mode of operation. For example in CE mode the input current is base current and output current is emmiter current which is (β+1) times amplified. The drop of this current across the load voltage is the output signal voltage. But a JFET is a voltage controlled device. The chalnnel conductance is determned by the voltage supplied at the gate terminal and depending on this the drain current flows.

MOSFET is one kind of voltage controlled device like JFET where there is metal oxide in between the gate and the channel. Depending on the voltage supplied on the gate terminal a voltahe is 'induced' by electrostatic induction in the isolated channel. The channel therefore behaves as a capacitor where due to the voltage some charges are induced. These charges shrink or extend the effective chanel width. For example in Enhancement Mosfet the channel width effectively increases and in depletion mosfet it decreases. Depending on this the drain to source current increases or decreasesA BJT is a bipolar transistor in the sense that there are two types of charge carriers in them. In npn trnsistor the primary carrier in the hole and in pnp the electron. In JFET there is only one type of carrier. In n-channel case the carrier is elctron and in p-channel hole. So JFET is unipolar in that sense.