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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

What parts are needed to create a circuit?

A basic electrical circuit needs a voltage supply (battery or household outlet), wiring to carry electrons to and from the voltage supply to the load, and a load (motor, light, heat element, stereo, blender, whatever).

What is the function of emitter bypass capacitor in common emitter amplifier?

The emitter bypass capacitor in a common emitter amplifier will have less resistance as the frequency increases. Since gain in this configuration is collector resistance divided by emitter resistance (within limits of hFe), the gain will thus increase for higher frequencies, making this into a high pass filter.

Who invented the walkman radio?

=The Radio was around long before the walkman, The radio was out during WWII and earlier and the walkman only came out in around the 70's so if i am correct that is after the good old radio!=

What are all the organs systems in the human body?

The systems are:

Endocrine (hormore/chemical management)

Integumentary (fancy word for skin)

Excretory (how your body removes waste)

Reproductive (how you reproduce)

Skeletal (bones)

Muscular (muscles)

Circulatory (circulates blood & other nutrients needed)

Respiratory (how you breathe)

Nervous (signals from your brain telling you what to do)

Immune (fights diseases)

I believe that is it.

On super Mario 64 ds how do you rescue Luigi?

kill the big boo in the backyard of the castle(mario needed), to go to boo's mansion,go in the front door,go to the 2nd floor(if you have not gotten go on a ghost hunt just triple jump up),go in the door on the back right,go on the table and get the power flower and float up,go in the luigi painting, then go in the doors in this order,right,left,right,left,goacross the falling blocks,up the platforms,and in the hole,and then ground pound or punch the ghost 3 times then you get the luigi key. Mario1998: Good description!

Where can one purchase a green laser pointer 100mw?

You can buy cheap laser pointers online. Here is the reason: There are thousands and thousands of people searching the web for brighter, more powerful, and cheaper lasers of all colors every single day. The internet can pretty much take all of the credit for allowing this global industry to grow so rapidly. When you can connect laser manufacturers from China and Japan to distributors in the United States, the UK, Canada, and Australia; you can expect loads of people to get their hands on powerful laser pointers. Then you can see more choice for you on the internet!

http://www.dinodirect.com/Electronics

Will a red laser light pointer damage a plasma screen?

Only the remote reciver since it will give conflicting information to the tuner/main processor to do wierd things. Might even make the unit's boards faulty at best.

How many lead acid batteries need for storage of 12 volt?

Not all 12 volt batteries actually use acid. Lead/acid storage batteries do, however, and in those the acid is generally 4-5 molar sulfuric acid. "How much" acid depends on the volume of the battery ... some batteries are physically larger than others ... but for a rough figure you can assume that somewhere around 30% of the liquid by mass is sulfuric acid.

What happens when you bring two magnets together?

Well it depends if you have 2 alike sides then they repel but if different they attract

How do you hook up two 12 volt batteries to get 12 volts?

Assuming both batteries are alike in voltage, and preferably current:

For twelve volts, connect the negative to the positive of the other. That will be a series connection, and then use the open negative and positive connections for 12 volt operation.

For 6 volts, but twice the power, connect the positive to the positive and the negative to negative, and use this combination for six volt operation but twice the available current.

NEVER, NEVER, NEVER connect two batteries together with one's positive to the other's negative and the negative to the other's positive. Results? BOOOM!!!!! (And I'm not joking.)

Is Vizio a quality brand television?

They are not a High end brand name, but are built very durably. I have three vizio's in my house along with relatives having many more. High quality picture sound comparable to brand name Sony and Samsung. If you were faced with a decision and were uneasy about vizio, they are not easy to break and will last.

How does a hydroelectric power plant produces electricity?

hydropower is made by water from water dams an proccessed by i think machines. some one please write a logical answer because i need to know this for a science project!!!

ok ok. hydropower is made by dams moving water. they have a spining thing, which is called turbines, at the bottom of the dam that spins when water moves past it. that creates power or electricity, i think. so yea. the faster the turbines spin the more power it produces. i hope that helps

How do you set the skyscan atomic clock model 88722ALU or 86722ALU?

Instruction Manual for SkyScan 8731See the related links for the manual that works for the 87315 model.

Follow the directions! Set your time zone, then set the clock manually. It took a full day for my clock to actually update itself, so don't get discouraged if it doesn't right away.

What are advantages and disadvantages of speakers?

nothing is wrong about speakers beside they all are terrible do not buy speakers that are black the sound doesnt work...buy beats speakers in white its the only way to have good sound.....small disadvantage would be that you need speakers that match your amp. So you can have very expensive amp with very expensive speakers sounding worst then cheaper combination

Explain the diference between batch processing and real-time processing?

IN REAL TIME SYSTEM THE OUTPUT HAS COME IN QUICK RESPONSE. WHEN THE USER ENTER HIS QUERY THEN THE OUTPUT COMES IN FEW SECONDS. AND IN BATCH PROCESSING SYSTEM THE THE SYSTEM IS NOT DESIGNED FOR QUICK RESPONSE AND THE USER ENTERS HIS QUERY DAY BY DAY IN A PUNCH CARD AND THE RESULT WILL BE SHOWN TO HIM BY SYSTEM IN FEW DAYS DEPENDING UPON THE QUERY.

What music emerged the most in the 1930's?

"On this site, the decade of the 1930's is divided into two halves, 1930-1934 and 1935-1939, for the music of the period lends itself to such a division. Over the course of the thirties American taste in music changed dramatically. In the mainstream it moved from the bland and unchallenging "sweet" sound of Guy Lombardo and the Jazz Age dance bands to the more rhythmically involved and aggressive horn arrangements of the bandleaders of the Swing Era such as Benny Goodman, Tommy Dorsey and many others. The first collection of songs, from 1930-1934, features regionally popular artists performing vernacular material. These performances were recorded during the initial wave of interest in "race records," "hillbilly," and "ethnic" music by major recording companies that led to the search for "new" performers throughout the southern and western states until the economic strain of the Depression precluded such endeavors. The jazz and blues selections in the first set of songs clearly demonstrate the emergence of significant musical forms with selections by pre-swing greats Louis Armstrong and Fletcher Henderson. The second set of songs from the middle of the decade to the end represents the emerging modern forms of American popular music. One can hear the fine-tuning of rhythm and blues in works by Ellington, Billie Holiday, Ella Fitzgerald and Cleo Patra Brown. The swing era is realized with recordings of Tommy Dorsey, Benny Goodman and Artie Shaw. Stars on the silver screen and in the sound booth, Fred Astaire and Judy Garland let us know of an alliance between the Hollywood machinery, the record industry and radio that grew in strength and influence as the decade wore on. The trademark sound of the Glen Miller Orchestra "Moonlight Serenade" would provide a generation with musical memories of American life during the Second World War."

http://xroads.virginia.edu/~ug03/Jukebox/front.html

What does scramble channel on a TV screen in a satellite reciver mean?

It means that either your receiver isn't properly locked onto the signal or it hasn't the authorization to receive the signal, or it's a different type of encoding than your receiver can handle. This is just but the first three reasons that came to mind. And yes, there are other possible causes as well.

When does a short circuit happen?

Short circuit is caused due to connection of earth and current wire.Because electrons start transferring from current wire to earth wire that is from high potential to zero potential and sparking occures due to electron transfering with high energy and heat is also evolved.

What is the difference between dynamic and native contrast ratio?

Static and Dynamic Contrast Ratios Faced with several different models of televisions from various manufacturers, the contrast ratio is one of the most important factors to consider in making your decision. A contrast ratio is defined as the difference between the lightest color and the darkest color the television is capable of producing. Basically, higher contrast ratios should yield more vibrant whites and deeper blacks. However, there are several important factors to consider when comparing contrast ratios: whether the contrast ratio is static or dynamic, and what effect your room will have on the visible contrast ratio. A static contrast ratio is the contrast ratio at a given point in time. Imagine pausing a movie and establishing the contrast ratio at that particular frame. Plasma televisions usually have vastly superior static contrast ratios to LCD flat panels. A dynamic contrast ratio is the overall contrast ratio the television can produce over time. Most LCD manufacturers now advertise dynamic rather than static contrast ratios, which often surpass Plasma TV's static ratios. Static and dynamic comparisons each have their pros and cons. A high dynamic contrast ratio is preferable for prolonged scenes that take place in dark settings or black and white movies in general. A static contrast ratio offers superior performance when there are sudden transitions from a well lit atmosphere to a darker one, and vise versa. ---- Recommended Contrast Ratios For Plasma Televisions

» Static Contrast Ratio of 5,000 : 1 or a higher

For LCD Televisions

» Static Contrast Ratio of 1,000 : 1 or higher

» Dynamic Contrast Ratio of 10,000 : 1 or higher

---- However, contrast ratio should never be your sole decision making factor. Firstly, most manufacturer's have slightly different ways of measuring contrast ratios. Secondly, contrast ratios are always measured in ideal viewing conditions (essentially, a pitch black room.) Depending on the lighting conditions in your room, your visible contrast ratio will generally be much lower than the manufacturer's claims. In short, a contrast ratio is a useful although imperfect benchmark for comparing different televisions, but it should never be used as a sole consideration.

What is an LCD?

It is a liquid crystal display, the most popular type of computer screen today.

Is there a machine to convert 35mm negatives to digital photos?

Yes. There are scanners designed specifically for this purpose, sometimes called negative scanners (which is mildly inaccurate). They are typically much more expensive than plain old flatbed scanners. You might want to look at the ones made by Nikon, or if you don't mind something used and older, try to find a Minolta film scanner.

Large commercial outfits will use enormous and frighteningly expensive drum scanners for the same purpose. Depending on how many you're scanning, you may well find it cheaper to get in contact with a company that deals with this sort of thing.

What are the three types of microphone?

o good overview is at http://www.soundonsound.com/sos/1995_articles/jun95/microphones.html here the broken down list: dynamic microphones: mesh ball on a stick, used in live sound-- inexpensive and hard-wearing capacitor microphones: more sensitive than the dynamic, picks up high-frequency sound, needs electric source to receive electrical charge electret microphones: similar principle as capacitor microphones, except its diaphragm uses an insulating material-- as a result, it has a permanent electrical charge

How was music made in the 1960's?

by going to a record dealer like jerry lee Louis went to sun records were they would play and get it published.

When was microwave oven invented?

In 1947, the first commercial microwave oven hit the market at $5,000 each. It was over 5 feet tall and weighed 750 lbs. Sometime between 1952-55, Tappan introduced the first home model priced at $1295.