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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
Why would the electricity shut off when you plug in another appliance?
Heaters use a lot of power and can easily exceed the capacity of an already loaded circuit. Anything with a motor or fan will use more power when starting up than after it is already running. If the circuit breaker or fuse is tripping when you plug in or turn on the heater, then you may have too many things on that circuit. Look at every electrical device on the circuit and add up the total watts of each one (it's listed somewhere on each, usually the back or bottom). Divide the total wattage by 120 to get the total amperage needed on that circuit. The fuse or circuit breaker should be rated for at least as many amps needed or it will trip when the total is exceeded. You may have to find another place to plug the heater in or have a circuit added to handle the extra load.
DON'T replace the fuse or circuit breaker with one rated for a higher load, the wiring may not be able to handle it and you could start a fire within the walls or attic. (Using extension cords for heaters in a house is a bad idea because the cord can overheat and start a fire.) If you aren't comfortable with this, find someone that knows what they are doing or hire a licensed electrician.
Where to download games to the games n music ds?
It is impossible to do the following. They design the memory card to have just enough data. So you would have to work at a memory card factory to make it have more data that can be downloaded.
What is the typical power of a green laser pointer in milliwatts?
A standard green laser pointer has a power of between 4 and 20 milliwatts. A red laser, for comparison, has a power of less than 5 milliwatts. The beam of a green laser can often be seen, while the beam of a red laser cannot be seen.
Batteries such as AA, AAA, D, and C are actually single cells.
A battery is a collection of cells put together to deliver a higher voltage or current than a single cell.
A PP3 9 volt battery is in fact a true battery as it is made up from 6 separate 1.5 volt cells.
However the term battery is so often used to describe a single cell that it is nothing more than pedantic to correct it to "cell", a term than few people are familiar with.
How do you program regency scanner model r1077?
One should program a Regency Scanner with the model number r1077 by first turning the device's power on. Then press the manual button until the channel wanted is shown. Once the channel number is shown hit enter, which will make the frequency channel that number. Then one can go to the next channel number and hit hold, or delay, to hold the number for dispatch. In order to lock certain channels one should hit the lock button when the channel number comes up instead of enter, and this will keep that particular channel locked.
How much is a Nintendo ds lite?
about 130 usd
65 GBP at Morrisons (UK)
The prices of a Nintendo DS Lite vary from store to store. Generally the prices range from $60.00 used to a brand new bundle pack for 199.00. In store prices vary as well as different sales and promotions happen.
saint liliian is saint of foolishness and was very very mean! she lived in spain
How much did the inventor of the computer mouse initially make from his invention?
The mouse was invented maybe 30 years ago at the Xerox Palo Alto Research Centre. (PARC) But there is no information on who exactly invented it, or if that person made any money.
Not true, Douglas C. Engelbart invented the mouse. He was at Xerox PARC at the time. According to Peter Forbes, "Engelbart, who had patented the mouse in 1967 in Stanford's name, never made any money from it; Stanford Research Institute licensed the idea to Apple for a nominal sum."
Steve Jobs saw the mouse in action as part of their research on user interfaces and "borrowed" the mouse and the GUI interface concept for the Apple PC.
Since Xerox was not successful in the PC business, I guess Jobs deserves a lot of the credit for making the mouse and the GUI interface the de facto user interface for the whole personal computer industry.
How do you measure DC current?
A: By introducing a very small shunt resistance in series with the source and measuring the voltage drop which a meter will translate into current
Why was the First Digital Clock Made?
The "Pulsar" digital electronic watch was the first watch of its kind, and it was developed in the early 1970s. It could only light up when the user touched a button, primarily because it used so much energy to operate. Interestingly the watch was inspired by the futuristic movie, "2001: A Space Odyssey", in which a prototype for a digital electronic watch appeared.
How is copper losses reduced in transformers?
how to reduce copper losses in a transformer
Copper losses are due to the resistance of the copper (or aluminum) windings.
To reduce copper losses the transformer would have to be rewound with heavier gage wire.
What are the advantages and disadvantages of using charcoal to produce electricity?
Advantages:
- Easy to produce (heating water to produce steam which turns a turbine)
- There are more economically friendly ways to produce it i.e. wind farms/hydro electric dams and so on.
Disadvantages:
- Depending on what method used to produce electricity can be bad for the environment i.e. using fossil fuels like coal/oil to heat the water to produce the steam.
- Doesn't mix with water very well (sometimes proves fatal)
These are just a few of advatages/disadvatages. - Hope this helps!
Why are analog clocks set to show the time as 10 minutes past 10 when they are on display in stores?
- It's all to do with marketing. Clock and watch designers commonly put their brand name directly below the 12 on a watch face. Positioning the watch hands at 10:10 creates a wedge that draws the eye upward, displays both hands and, most importantly, showcases the brand!
- The consensus of opinion (some internet references quote this as confirmed by Timex) is that clock and watch hands in advertisements are typically set at 10:10 so that the company's logo will be well-displayed.
- Watches in advertisements and in shop windows all have the time of 10 past 10 because it creates a smile-like shape. 10 is a feel good number- so 10:10 leaves one feeling warm and fuzzy and lucky. This attracts more customers as the watch looks "happy".
- Actually a French clock-maker asserted that all the clocks were set at 10 past 10 to honor the memory of the Sun King, Louis the 14th who was, he said, beheaded at that exact moment which is obviously wrong since that very king was not beheaded, but affections remain high for this king who loved clocks so much that he turned the royal clock-makers into aristocrats, noblemen.
What are the properties of a semiconductor?
There are a few (general) properties of semiconductors:
- Allowing current to move more easily in one direction than another
- Operating better at high temperature (as opposed to normal conductors where the reverse is true)
- The can exhibit variable resistance
- They can be sensitive to light
- They can be sensitive to heat
- Can used to produce coherent light (semiconductor lasers)
The exact property is determined by the make up of the semi-conductor
The basic element of a semiconductor memory is the memory cell. Although a variety of electronic technologies are used, all semiconductor memory cells share certain properties:
- They exhibit two stable (or semi-stable) states, which can be used to represent binary 1 and 0.
- They are capable of being written into (at least once), to set the state.
- They are capable of being read to sense the state.
How old to work at radio shack?
16 with a working permit unless you know the manager and they let you work at 14 but you will still need a working permit. 16 with a working permit unless you know the manager and they let you work at 14 but you will still need a working permit. 16 with a working permit unless you know the manager and they let you work at 14 but you will still need a working permit.
What is Guglielmo Marconi's invention known as in the US?
Marconi invented the radio. He invented a successful system of radio telegraphy in 1896. In 1895, Marconi invented equipment that transmitted electrical signals through the air (part of telegraphy and radio transmission).
How do you check fuse with multimeter?
The current in the socket can not checked directly because the sockets are connected in parallel to the supplu and we can not measure current in parallel it is always measure in series so connect a lod to socket after that use ammeter in series to measure electric current.
Electricity is used in an extraordinarily broad variety of ways. It finds application in domestic and commercial settings, as well a strong use in the industrial facilities that support our lifestyles. We use electricity as meanings of gaining on-the-spot access to (electrical) energy that can be changed into mechanical energy by motors. We use electric motors in thousands and thousands of items from tools and machinery to appliances to entertainment equipment. We light the heck out of our world using electric power. It's a huge application.
Electricity is something many of us take for granted. It is "behnid the scenes" in propping up the infrastructure of modern society. We light areas we use. Heat and cool places where we work and live. We ship, store, vend and prepare food with electricity. We work and relax using technology that is electrically powered.
Imagine a world without electricity. Get a small notepad and log each event every day that involves something you did that required electricity. It could be either direct application like lighting a room or working on a computer, or indirect, like using something that was manufactured using electricity. Our lives are powered up either directly or indirectly by electricity. Grabbing a backpack and hiking off into the woods is about the only way to get away from it. Oh, and leave behind all the things that were manufactured using electricity. Like you pack. And your equipment and packaged food and water. And your clothing.
How much were portable CD players when they first came out?
The first portable CD players hit the market in the same year that CDs were launched. Among others, Sony had a portable player that came with a mains power adaptor and an optional battery pack for use away from a mains supply.
The price was in the region of $400 / £250 and was in excess of twice the price of a static player at the time.
What is the Difference between linear IC and digital IC?
Both linear ICs and nonlinear ICs has an output voltage which is dependent on the input voltage. However, the difference is that linear ICs produce an output voltage which increases or decreases at a "fixed rate" relative to the input voltage.
Nonlinear ICs do not do this. A voltage regulator may be considered nonlinear because as you increase the input voltage the output will climb at the same rate (just like linear ICs), however, once the input voltage reaches a particular level point, the output no longer increases as you increase the input. This is at the point where regulation begins. The nonlinear IC no longer changes its output at a fixed rate relative to the input.
Why does computer screens seem to flicker in pictures or videos?
Video screens when videotaped flicker because the refresh of the screen doesn't match the sampling of the camera. This is less of an issue with progressive displays and LCDs. It's mostly a problem with CRTs.
Where are video game designer jobs?
I actually wrote a blog post on this a while back - the focus was where the video game jobs were in North America. Not 100% accurate by any means, but it's a nice start: http://gamejobhunter.com/blog/?p=14
Can you switch a 220 microfarad capacitor with a 100 microfarad capacitor?
This depends on the application. It may be OK to do so, or it may result in problems. If this is an already designed circuit, and you have a 820u cap that has blown, I suggest replacing with a 1000u (in my experience, this is more common and readily available), AND i usually up the voltage rating on the cap.
Capacitors typically blow due to overvoltaging or reverse polarizing them. If they've blown before, it's likely you'll have similar problems again, which is why i go with bigger, and higher voltage rated. I hate reduing things repeatedly.
In a movie projector how does energy change and what forms of energy result?
Jim is transferred. Jim is a term meaning elec. energy. Also Jim is more scientific.
