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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

How do you wire a capacitor to a 12 volt car battery to have as much voltage as possible?

I assume you are wiring up one of those obnoxious window-rattling bass thumpers that require a massive capacitor for quick response. Well you can't increase voltage any way you install it and if you did the whole system would fry and set your car on fire. What a capacitor does is store a lot of power that can be released as a massive current surge when the amp wants it. Wire it AS INSTRUCTED by the manufacturer and don't modify the wiring! If you want more power buy a bigger amp. There are no shortcuts.

What were the roman contributions to technology?

The Romans invented the arch which lead to domes and vaults. It was made possible buy the key stone at the top of the arch that is shaped wider on the top than the bottom, creating a stable roof. Also, they discovered pozzolana, volcanic ash, When mixed with water forms a concrete that dries slowly, allowing Roman architects to make elaborate designs.

Do magnets affect capacitors?

Yes, they do, but their affect is minimal. Magnets with their magnet fields affect inductors profoundly, but don't do to much to capacitors.

Why variable resistors are not very reliable?

i find this question rather shallow and pedantic. Clearly the molecular structure of an apple seed is equal to the equilibrium of a ten ton block of iron. Think of it as a quadratic function that has no solution. X is equal to the mass of jupiters moon, io. I hope that clears it up for you. :)

Was there a copier that used no ink but a special type of paper?

Thermal printers, still used in many stores and gas stations use no ink but require special temperature sensative paper that 'burns' when printed on. If you iron a piece of this paper it will all turn black. It is usually very shiny on the printing side and the image may be easilly scratched. The image may fade with time because of the thermal sensitivity of the paper.

How can you download music on your 2GB micro SD memory card?

The general equation is 1min of mp3 audio = 1MB so...

4gb = 4000 mb and let's take an average song that u put on the card to be of 4 mins so...

4000/4 = 1000 songs.

or

Music 128 Albums Music 80Hours of Music Photos 4800 Photo Video

8 hours of Video (DivX)

if you have any mobile phone which is competable with microw sd 2gb crad then conect your phone to the PC and go to internet and download stright to your memory card .

note if you have memory catd slot in you PC you can use it as well and use internet explorer to download because it has got the option that it well ask you where do you want to save and firfox sometime do ask but normally it is confusing .

What is first method recording television programmes?

As far as I'm able to determine, the first method was to film it off a kinescope tube. Some of the older Jackie Gleason Honeymooner's were kinescope'd as well as some of the earlier Twilight Zone episodes. One of the way you can tell, is in the contrast ratio of the images, in that they're more `contrasty' in appearance.

Later, that method (1956/57) was replaced with video tape and the video was transferred to be archived and used over and over and over and over and over again. Just ask the Sci-Fi channel.

Why can't you put aluminum in a dishwasher?

You CAN put aluminum in a dishwasher. It's just the risk of chemical reaction caused by some detergents, water supplies, and wash temperatures. Details omitted.

How to oil a Brother HL-5050 printer?

To oil a Brother HL-5050 printer remove the ink and paper. Wipe residue from the roller using a clean cloth.

What are the advantages of embossing?

It is mechanized and therefore is less time consuming than using tools, and requires less manual labour, therefore being cheaper than, for example repoussé, which uses tools to handcraft a raised pattern.

What is the difference between wireless voice messaging and phone calling?

I'm not sure I completely understand the question, but if by wireless voice message, you are speaking of the way that certain cell phone providers offer a way of using your phone as a walkie-talkie of sorts, then here's my answer: The way that I think of a wireless voice message is as if it were an email that you speak. Basically, you are recording a message into your phone and sending it to someone else's phone. A phone call actually opens up a live line where noises on either end can be transmitted in real time simultaneously.

How does a woman stop being made a fool of?

Well! They have to learn from their mistakes by allowing what ever happened to them in the future!

What do resistors do?

Resistance: Electrical resistance describes how an electrical conductor (a wire) opposes the flow of an electrical current (flow of electrons). To overcome this opposition a voltage (a energy) must dropped (used) across the conductor (wire). Resistance can be described by ohms law: Ohms Law: R = V / I (Resistance = Voltage / Current) (resistance measured in ohms) where: Voltage [V]= the energy lost across an component (voltage measured in volts). Current [I] = the charge (electrons) flowing through an component (current measured in Amps). Electrical resistance can be thought of as sticking your hand out a car window. The faster [current] you drive the harder the wind presses [resistance] against you hand and therefore it takes more energy [voltage] to hold your hand steady. When trying to overcome electrical resistance, the electrical energy lost is turned into heat. This is how the elements of a household stove, toaster, and fan heater work. Because of the vacuum in a light bulb, the electrical energy lost is instead turned into light. It can be seen the electrical resistance plays a large role in modern life. Resistor: The resistor is the most common electronic component and is used to limit and/or control the voltage and current in an electronic circuit. Resistors are carefully manufactured to provide a predetermined value of electrical resistance which may range from 0.1 ohms to 100,000,000 ohms, depending on the application. The physical size of a resistor also varies dependant on the amount of power passing through the resistor, given by: P = V x I (Power = Voltage x Current) (power measured in watts) There are also many types of resistors including: · Variable Resistor - changes resistance when its shaft is rotated (volume knob on a stereo). · Thermistor - changes resistance when the temperature changes (used in a thermostat). · Light Dependant Resistor (LDR) - changes resistance when the lighting changes (used in children's night-lights). Resistor Example: An LED is a small red light (such as the one on the front of most TVs) and requires 2.0 volts and 0.02 amps to operate correctly. If we connected that LED up directly to a 12 volt battery, the voltage would be too high, and too much current would flow… the LED would blow up. We need to use a resistor to limit the voltage and current. But which value of resistance should the have resistor? Uses ohms law: R = V / I = (12.0 - 2.0) / 0.02 = 500 ohms (Note: the voltage across the resistor is the battery voltage minus the voltage we want across the LED) But which value of power should the resistor be capable of handling? P = V x I = (12.0 - 2.0) / 0.02 = 0.2 Watts

What is the difference between cr2025 and cr2032 batteries?

CR2025 = Diameter: 20 mm. Thickness: 2.5 mm. Capacity: 160 mAh, CR2032 = Diameter: 20 mm. Thickness: 3.2 mm. Capacity: 220 mAh

Fridge temperatures in Celsius?

These temperatures are different for each type of refrigerator.
Read the instruction manual of your refrigerator.

How do you decalcify your electric kettle?

all you have to do is pour some white vinegar - white, not cider vinegar - and let it sit for a few hours....at least eight...fill it to where the 'calcified' line is, then pour it out, rinse very well with cool not hot water, then run thru a pot at least once to get rid of any traces of the vinegar...this is one of those old 'homestyle' remedies people have used for years!!

What does TASER stand for?

Taser is an acronym, named for a fictional weapon: Thomas A. Swift's Electric Rifle.

Source: WikiPedia and Taser International.

Where can you get instructions for Early Warning TM radar detectors?

I have been successful at retrieving operating manuals by searching for the product on the manufacturer's website. If you cannot find the manual online, you might try calling the manufacturer and requesting that a new set of instructions be emailed or mailed out to your residence.

What are the preventive maintenance of steam turbine?

The preventive maintenance of steam turbine mainly entails frequent servicing of the parts. This will ensure a smooth performance of the steam turbine.

Are There Really Free Cell Phones?

Yes, the cell phones are free when presented by the carriers as free. Sometimes you are required to mail in a rebate which makes it not free immediately. The reason free cell phones are offered is to get you to sign up for a contract of cellular services which is profitable to a company (carrier) and gives them an average customer retention of usually 2 years minimally.