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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 was an express purpose of radio free Europe?
To convince Eastern Europeans that Americans had a better way of life
How does the Thermosphere help us?
The thermosphere, which is a region of the Earth's atmosphere, is above the mesosphere. The thermosphere helps the planet because it absorbs most of the X-ray and UV radiation from the Sun. The thermosphere extends from 53 miles to about 621 miles above the Earth's surface.
How do kinetic flashlights work?
A bar magnet moves back and forth through a coil. Moving a conductor through a magnetic field (or vice versa) generates a flow of electrons. The electrons are used to charge a capacitor, and the saved charge can be released gradually to power the flashlight bulb.
How do you charge the Roland AX-Synth if you have the NiMH Rechargeable batteries?
The AX-Synth does not recharge the batteries. You have to get an external AA Ni-MH charger.
How did the first televisions work?
=Television camera was at first a spinning mechanical wheel with a spiral of holes in it. An image would illuminate a photocell or not and send that signal to another such wheel with a lamp behind it replicating the photocells input and shining on a screen. When it was discovered that electron beams could be controlled and that they would light up a phosphorescent screen (radar and) T.V. was on the way. A Felix the Cat doll was the first T.V. image broadcast. It was used to set up the system.=
Can you build an oscilloscope using a computer monitor?
Yes you can. You need to build the oscilloscope circuits and interface them with your PC via parallel/serial/USB Port. Plus Build a program to get the data coming from the port and display it on the monitor.
You can use your computer soundcard to view audio frequency signals (20Hz - 20KHz, sound card dependent) using software you can download from the web.
WARNING - You can severely damage your soundcard if you exceed the input voltage range! Be sure to use a circuit to limit the input voltage to 1-volt and proceed with caution!
How did the physical geography of the northeast help influence the spread of industry there?
Northeast had many swiftly flowing rivers to provide water power for the new factories, and the south had land and climate that favored agriculture.
Why do you need a phono stage for your turntable?
You need a phono stage for your turntable so you can call Walmart and get a real stereo.
he wears a blue top with a yellow stripe going through the middle. he also wears blues jeans with green or White trainers.
Where is the converter located on a 1993 holiday rambler?
On the Alumalite it is located under the kitchen sink, front wall of the trailer.
The air blend door may be losing vacuum pressure momentarily due to a small leak, and letting the hot air from the heater core in.
No they do not, only the apple store and other electronic retailers.
What three people invented the imax?
Refered as the Image Maximum or IMAX, this film format is a projection standard and movie format developed by IMAX Corp. of Canada. A number of people are known to have contributed in the development of IMAX namely William C. Shaw, Nicholas Mulders, Roman Kroiter and Graeme Ferguson. Prior to this, efforts were made to improve the visual 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.
What are the applications of digital signal processing?
Digital signal processing is used instead of complicated analogue circuits.
It is used in mobile phones and PA amplifiers to prevent feed back (howl round).
A microphone placed near a speaker, will cause the microphone to hear itself and cause an annoying howl. By applying some of the mic signal in antiphase to the local speaker, this can be stopped. This allows simultaneous conversation using hands free, which would be impossible without digital signal processing.
It can also be used to clean up old recordings to remove noise.
All sorts of effects can be applied to an audio signal, such as reverberation, echo and tone.
Once the signal is in digital form, all the processing can be done by a program using mathematical processes and applied digitally to the original signal. Changes can be made by simply altering a few lines of code.
before digital processes, sound had to be altered by complicated, expensive, circuits that could not be changed easily.
What is the minimum amount of current enough to kill a man?
100mA of 60Hz AC current for three seconds can cause ventricular fibrillation. From "Deleterious Effecst of Eelctric Shock", Charles F. Dalziel.
Its the hose that attached to a vacuum. Its where the suction is transferred from the vacuum cleaner to any attachments. Its also generically referred to as a vacuum for your car.
What types of zoo enclosures are there?
there are many different types of enclosures including cages jungle enclosures for monkeys and lion enclosures, grass, mud, forest, adventure, e.t.c
What age group plays the most video games?
You wont see too many kids have an addiction to games. Most game addicts are people from age's 13-21. Kids below the age of 13 do not have as much stress so teenagers take there stress out on addiction.
How do you measure cross polarization?
cross polarization = xpd so, xpd = 20 log E11/E12 where E11 and E12 are the two waves.
What are some examples of conductors?
Some examples of a conductor would be iron or copper but basically anything that's a metal.
