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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
Who invented the IMAX widescreen?
There are mainly people behind this technology to have invented the IMAX. Some of the guys were namely William C. Shaw, Nicholas Mulders, Roman Kroiter and Graeme Ferguson. There were many efforts made to improve the impact of movies. The very first one was in 1929, when Fox developed the 70mm format called Fox Grandeur. After that, many efforts soon followed including the VistaVision in 1954 and the CinemaScope in 1953. The very first IMAX film was entitled "Tiger Child," which became part of Expo 70 that was held in Osaka, Japan.
Why does my Panasonic camcorder not power on?
Because it's an electronics device, there can be several reasons why it won't turn on. Could be the battery's reached the end of its useful life and will no longer accept a charge. Maybe the charger itself isn't working properly and can't charge the battery. Then if it's been in storage for awhile, could be that the internal lever switches or circuitry that detects the presence of the battery isn't working properly (that also depends on the storage conditions, age of the camera). Generally though, what's happened is that the battery has aged and dried out, thereby not being able to take or maintain a charge. Try a new battery, first and see what happens. Because it's an electronics device, there can be several reasons why it won't turn on. Could be the battery's reached the end of its useful life and will no longer accept a charge. Maybe the charger itself isn't working properly and can't charge the battery. Then if it's been in storage for awhile, could be that the internal lever switches or circuitry that detects the presence of the battery isn't working properly (that also depends on the storage conditions, age of the camera). Generally though, what's happened is that the battery has aged and dried out, thereby not being able to take or maintain a charge. Try a new battery, first and see what happens. Improve Answer Discuss the question "Why is my Panasonic camcorder unable to power on?" Watch Question
Robots are "made" much the same way any other machine is made.
First, decide what you want the robot to do.
Second, design the robot, including every bolt, wire, computer processor and sensor.
Third, evaluate the feasibility based on the materials required, labor required and costs.
Fourth, re-design to meet budget constraints and/or other requirements.
And ABSOLUTELY last, actually start putting it together as designed by the engineer(s).
Why was the electric iron invented?
The electric car was invented so the earth can stay alive and healthy, meaning we humans stay alive 'cause of all the healthy trees and plants.
How do digital electric meters work?
measures amount of electricity used
It depends on what kind of meter you are talking about
one meter is on the side of your house witch measures how much eletricity you use.
another kind is a voltage meter witch can tell you how many volts, amps,watts,and ohms are being pumped through a eletrical wire.
AnswerWhat is colloquially known as an 'electric meter', or 'electricity meter', is correctly termed an energy meter. As the name implies, an energy meter is used to measure the amount of energy (not 'electricity', which is not a quantity!) purchased from the electricity supply company for the purpose of billing its customers. This energy is measured in units called kilowatt hours (kW.h) and, for this reason, energy meters are sometimes referred to as 'kilowatt hour meters' or 'watt hour meters'.
Not long just long enough to eat away your oesophagus & intestines.
You;ll either bleed out or dies if a severe infection.
Somewhere between 2 to 24 hours depends on the acid strength.
How do magnets and electricity affect each other?
electromagnetizm!!!!!!!!!!!!!!!!!!!!!
No it is not electromagnetism I think it is magnetic fields, North side being negative and South side being positive....
whatever!!!!!!!!!!! =!
What is radio frequency receiver?
The definition of what it is, is actually in your question. It's a receiver that operates in the radio frequency spectrum. Anything that has a transmitter is said to transmit in radio frequency or `RF`. The term radio is short for radiotelegraphy, which has become generic over the years.
Where does the radio frequency start? Technically, it' at 10,000 hz and higher. That's not to say that there's lower frequency transmitters (The U.S. Gov't uses 2 hz. to reach our submarines when they're under water, but that's more of an exception than the rule. The radio frequency spectrum can extend into the gigahertz range for things such as satellite communications, and as our technology advances, we could eventually see frequencies in the teraherts.
So a radio frequency receiver is anything that will receive a a frequency in the radio frequency range.
Hope this helps,
Cubby
Erica Feldman invented the hair straightener in 1872?
Erica Feldman never existed. Apologies for the 12 year late answer, but the misinformation is still commonly thought of as true, so to clarify: Madam C.J. Walker was who we call Erica Feldman, however a vandal on Wikipedia changed the names to fictitious people. Regardless, Lady Jennifer Bell Schofield should be credited for the actual invention of straightening irons in 1912.
Characteristics of relaxation oscillator?
A "Relaxation Oscillator" is an "R/C" oscillator, in which a Capacitor is charged from a DC (Direct Current) fixed voltage source, through a resistor.
Connected across this Capacitor is a "device" that, initially, does NOT conduct any current. But when the Voltage on the Capacitor reaches a certain value (depending upon the characteristics of the "device") the "device" will "break down" or "avalanche", or suddenly drastically decrease in resistance.
This causes the "device" to quickly start to discharge the Capacitor. However, when the Voltage across the Capacitor and its parallel connected "device' decreases with the discharge cycle, the "device" will suddenly return to its "non-conducting" state, and the Capacitor again begins to re-charge.
The Capacitor again reaches the "break down" voltage of the "device", and the process continues, thus effectively creating "oscillations".
One version of this circuit uses a simple Neon lamp (such as a NE-1) as the "device". Typically, the "break down" or "ignition" voltage of a neon lamp is around 70 volts. At this point, the gas in the lamp "ionizes", becoming highly conductive.
However, when this voltage drops (as the lamp discharges the Capacitor) to about 50-60 volts, the lamp "goes out" (the neon gas is no longer ionized or conducting), and the Capacitor again starts to charge through the resistor.
This form of the "Relaxation Oscillator" will not operate at high frequencies (such as Radio Frequencies), and was often used to just generate a "flashing light" (the Neon lamp).
With the advent of semiconductors, a device called the Unijunction Transistor (UJT) was developed. It contained three leads, the Emitter, Base 1, and Base 2.
The junction of the Resistor and Capacitor is connected to the Emitter, with the "bottom" of the Capacitor (and the negative side of the Voltage Source) connected to Base 1 Base 2 is connected to the positive side of the Voltage Source.
Again, when the voltage on the Capacitor reaches the "break down" level, the UJT's "resistance" between the Emitter and Base 1 drastically drops, discharging the capacitor. However, when the discharging current through the UJT drops below a certain level, it again develops a high resistance between its Base 1 and the Emitter, and re-charging of the Capacitor begins again.
UJT circuits can operate at higher frequencies than the Neon bulb circuit. Often a resistor is inserted between Base1 and the common or negative side of the voltage source, and the resulting discharge current produced voltage across this resistor is used to trigger other devices. Also, the voltage waveform across the Capacitor approaches a linear "sawtooth" waveform (depending on circuit component values), but not nearly as linear as other approaches.
"Devices" of this type are considered to have a "negative resistance" characteristic, which is another discussion in itself.
What percent of kids have cell phones?
The majority of kids in the US have cell phones. Since the question was asked in 2008, costs of cell phones have dropped to point where price is not a barrier to owning them.
Examples of electronic components?
Many electronics have several components in common. The most common are capacitors, resistors, transformers, and batteries. Others electronic components include antennas, terminals, connectors, and switches.
What power does the governor have that the president does not?
In general, the president has more power of the Governor.
Why wont my fisher paykel dryer heat up?
First, I assume that the drum spins OK but there is no heat. Many things can cause this. From the most likely cause to the least likely:
1) An open thermal fuse. This is a small "thermostat" with 2 wires at the middle/top of the heater "box" (a tall narrow box on right in the back of the machine), or a plastic type on the duct close to the blower, depending on the model. You will need to remove the back cover of the machine to see these. Check with an ohm meter after disconnecting one of the leads, or jumper the 2 wires together to see if heater works (don't use this way though, fire hazard... replace the device) If this proves to be the cause of the problem, it would be wise to check all ducts and blower for excessive lint buildup. This will reduce air flow, causing overheating and blown thermal fuses.
2) A burned out heating element. Remove tall box on right, element slides out from the bottom together with the "carrier". Look for broken coil, or check 2 terminals at bottom with ohm meter.
3) Burned wires at connectors. Check for obviously overheated wire terminals at all sensors (thermostats and thermal fuses in back), heater box, main terminals where power cord hooks up, etc.
4) Bad thermostats. There are usually 2 or more. A high limit on heater box, just above terminals on the bottom. 1 or 2 will be on the duct next to the blower. Check these with an ohm meter (or continuity checker). Some have 4 terminals, the extra 2 small terminals are small heaters inside the thermostats which alter it's temperature characteristics. These will usually read around 4000 ohms or so. Check the 2 main largest terminals for continuity.
5) Only getting 110 volts: This is often overlooked, but if for some reason one of the poles feeding the 220 power from the house wiring is open but the other is OK (for example, houses with fuses where only one fuse is blown, or a bad circuit breaker with one pole open). The motor and timer run on 110. If the side of the 220 line that feeds the motor is OK but the other one is open the motor will run but the heater, which needs 220 will not heat. Check for 220 volts between the 2 outer terminals where power cord connects or between the 2 "hot" terminals of the 220 outlet the dryer is plugged into.
6) Bad centrifugal switch in motor. This is what actually turns the heater on, for safety reasons, so the heater cannot come on unless the fan is spinning. Otherwise without air flow past it, the heater would burn out.
There are 2 large gauge (usually red or yellow) wires going to the connector on the motor, these go to the contacts inside the motor that turn the heater on.
What percentage of teens and children have a television or computer set in their bedroom?
According to Dr. David Walsh, founder and president of the National Institute on Media and the Family (www.mediafamily.org), 53% of children and 65% of teens in America have a TV in their bedroom. The institute has found that kids with televisions in their bedrooms watch about 5.5 hours of programming more each week than those who don't.
-- Sorry its all i could find, hope it helps though --
How did you use a cassette player in the old times?
Answer
First you press eject on the player. This opens the door which you have to put the cassette into. Then (and a safety WARNING is issued here), you insert the tape into the slot provided. Then you push the door closed and press play! A simple but genius invention which had touched many hearts, minds (and throats) along its history.
Answer
It worked the same way a CD player or DVD player works: you put it in and press play, fast forward, rewind, stop, pause, etc. Except, with a cassette player, "rewind" literally meant rewinding the actual tape inside the cassette. The music or video was encoded on one long plastic ribbon that wound around two spools (like spools of thread). When the tape played, it wound itself around the spool on the right, and as the winding tape passed over a certain place, the material on it would be played. When you rewound it, it would rewind itself back around the left spool.
Who manufactures Insignia products?
Sansui... but that doesnt even work all the time for Insignia.
Try 10463, that worked for my Comcast service on a Insignia 26" LCD TV.
took me over a half hour to find a code that worked.... ayo im tired of usin technologay
How do you input the spectrobes cards?
you go to the card input machine and place your card in the ds touch screen. there are sevral holes in the card. each one is numbered. touch hole # 1 with the styles. fallow the number order from 1- 7. then the machine will scan the dots you did with the styles and you will get the item. make sure you do 1 first to seven in number order other wise it will not be put in correctly.
Why are tools and equipment important to an electronic technician?
the right tool for the right job. It is true that if you are inventive you can get along and do what you need to do with almost anything, like Mac Gyver. But is always better to have the appropiate equipment and expertise to accomplish the job properly. Hope that helps.
How do you make a strong electromagnet?
Electromagnets are made by wrapping wire around a conductive rod, so that an electromagnetic field is created when current is passed through the wire.
CAUTION : Do not use 110-120 volt AC power in any science experiments. This represents a dangerous electrical shock hazard. Use low-voltage DC wherever possible.
To make a simple electromagnet ,you can wrap 50 or 100 turns of thin insulated copper wire along the length of an iron nail, forming a neat coil of wire tight along and around the nail. (Leave about 9 inches of wire free at each end of the coil to attach to the power source.)
1. Wrap the insulated wire around the nail, moving down the nail as you go.
2. Fix the coil of wire in place with some sticky tape.
3. Clean off the insulation at the ends of the extra wire, for about 1 inch, exposing the shiny metal inside.
4. Bend the ends into loops and connect to a LOW VOLTAGE direct-current power supply, such as a model train transformer or a D-cell battery pack.
When you hold each end of the coil to the terminals of the power supply, it will send an electric current into the coil around the nail. The current will make the nail magnetic. You should then be able to pick up other nails with your electromagnet. (Doing this for just a few minutes will use up all the electric charge stored inside a battery and it will go dead.)
Experiment by using more or less turns of wire to make the coil around the nail bigger or smaller. The more coils you wrap around the nail the stronger the magnet will get. The larger the voltage of the power source you use, the stronger your electromagnet will get. But don't use more than 15 volts -- it is dangerous because the wire could catch fire or you could receive an electric shock.
Another answer
Making an electromagnet is really quite simple. First you get some wire (22-18 gauge should do just fine). The wire must be insulated. Next, take an iron nail and coil all of the wire around the nail except a small bit on the ends. Strip off the insulation to connect to your power supply. Hook the ends up to some batteries, and presto -- you have a fancy little electromagnet.
Another answer
To make an electromagnet, take an iron rod (fairly small). You'll also need some wire, stripped at the ends. You should then wrap the wire into a coil around the iron rod. The more coils, the stronger the magnet. The two wires should be connected to your power source (a proper scientific powerpack- so you don't electrocute yourself). Turn on the power, then see if it will attract paperclips and other small iron and steel objects.
What battery goes in a fossil blue watch?
I have a Fossil Blue BQ-8774. To remove the watch back cover, I unscrewed the entire cover. There are notches in the back cover, and I used a small screwdriver in one of the notches and tapped it repeatedly, opening the back cover in a counter-clockwise direction. The battery inside was a 373, also known as SR916SW.
You can catch them south of Blackthorn city in Pokemon Soul Silver and Heart Gold.
Skarmory is found in Sevault Canyon on Seven Island.
When do girls start growing breast?
Girls wear a bra at night and most of the time they are between the ages of 9 and over.
What do you do if you drop your Itouch in water?
Take it out of the water.
Do not turn it on! Remove the battery if you can.
Placing it in a jar of uncooked rice which will help draw moisture out of the electronics. Let it sit in there for at least 24 hours, preferably longer.
They are used in loudspeakers to replicate sounds-coil type. they are also used in coiltype antennas in the base of receivers such as old emersons. this was an adveritisng ploy that the radios had(aerial eliminators) and did not need unsightly or visible antennas. we had an old zenith with base coil antenna. Also coils have a variety of applicaitons in tuning and band spread. Any electrical coil is essentially a form of electro-magnet.
