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Consumer Electronics
Total questions 13700
Is there a LM3914 circuit that ranges 8 to 18 volts?
I just stopped using the LM3914, and now use a quad comparator (LM339) with a simple voltage divider. It's a little bulkier, but...
Popularity: 173 • Tools: Recategorize
What are the advantages of TTL over CMOS?
TTL is less sensitive to static-discharge failure and less expensive. It is also faster. There is a condition called "latch...
Popularity: 164 • Tools: Recategorize
How do you determine correct size varistor on a 24vac coil?
is this coil a single shot solenoid or is it used as a filter i assume you want to know a good value for a varistor to stop...
Popularity: 160 • Tools: Recategorize
How do you practically realize the design of a double-stub impedance match using microstrip?
microstrip line is unbalanced line so it works in same way as other unbalanced line. so in double stub, the microstrip line forms...
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What happens when 110 volt equipment is plugged into a 240 volt source?
You should assume that any appliance or motor designed for 110 operation and plugged into a 240 volt circuit will rapidly self...
Popularity: 156 • Tools: Recategorize
Can you connect any mini disc recorder to your computer or does it have to be specifically a Net MD?
yes you can using the usb and for steaming recording u can can use the line out either on the sound card or onboard...
Popularity: 154 • Tools: Recategorize
How do you hook up a 1 farad capacitor to your amp?
You first have to determine which side of the cap is positive and which side is negative. You run a wire from the negative side...
Popularity: 152 • Tools: Recategorize
What can you do if you have lost the interactive display on your microwave?
This common problem can be repaired by a competent technician.
Popularity: 151 • Tools: Recategorize
Is there a wireless earbud that works with a standard headphone jack?
Most wireless earbuds are specifically designed to fit a brand of phone. That is why there isn't really a universal earbud. This...
Popularity: 149 • Tools: Recategorize
Where is the positive or negative lead and the ground on a CB radio?
to get a positive you can go straight from the battery or the fuse box to ground the cb you should ground it to the body
Popularity: 149 • Tools: Recategorize
How do you connect wires using a heat shrink connector?
I don't know of a heat shrink connector. Normally heat shrink is an insulating material which is very convenient and useful for...
Popularity: 145 • Tools: Recategorize
What is NAND flash?
NAND Flash is a special form of Flash memory. Flash memory is a memory technology that keeps data even when the power supply is...
Popularity: 143 • Tools: Recategorize
How can you update Zeta cam software with a digital receiver?
Popularity: 143 • Tools: Recategorize • Needs Answer
What are those packs found inside electronics boxes that warn Do Not Eat?
A chemical used to absorb moisture. It is silica gel. It absorbs moisture. The following is from a poison control...
Popularity: 142 • Tools: Recategorize
Is a fifteen Amp circuit breaker on a one hundred Amp panel actually de-rated to allow only twelve Amps?
when adding up loads for sizing other conductors such as mains and main breakers, you assume each receptacle circuit is loaded at...
Popularity: 142 • Tools: Recategorize
Is there any technology to control the brain waves?
There is a technology called brainwave entrainment that uses audio to alter or influence brainwave activity. Basically, you...
Popularity: 142 • Tools: Recategorize
How do you make a phonograph?
The production of a modern disc phonograph record is quite different from a cylindrical phonograph. I'll try to give a basic...
Popularity: 141 • Tools: Recategorize
Why do snooze buttons only work for 9 minutes?
I could be wrong, but I get the feeling the person who posted this question means why was 9 minutes chosen for the intervals as...
Popularity: 141 • Tools: Recategorize
What are the advantages of TTL logic family?
To know about the advantages of TTL logic family, one should have a basic idea about RTL, DTL etc. Diode logic (DL) uses diodes...
Popularity: 141 • Tools: Recategorize
How do you calculate the total MA needed to power 3 9v DC 200 MA devices?
The total current (MA) needed is the sum of the currents for each device. Each requires 200 mA, so three require 600 mA. As the...
Popularity: 140 • Tools: Recategorize
How many watts of power does it take to talk to Japan from California on ham radio?
Depends on many factors. What frequency are you talking on, what are the atmospheric conditions like, how good is your antenna,...
Popularity: 140 • Tools: Recategorize
Will the price of iPods drop any time soon?
The prices of all consumer electronics products drop eventually. Unless the iPod becomes rare or valuable for some other reason,...
Popularity: 139 • Tools: Recategorize
Can you replace a 25V470 microfarad capacitor with a 63V470 microfarad one The physical size is the same?
Yes you can - in principle, and in many cases. As long as the form factor of the new capacitor is the same as the form factor of...
Popularity: 136 • Tools: Recategorize
Is it possible to connect a laptop's sound to the radio speakers?
i hook my laptop up to my stereo. you just need a cord that goes into the headphone plug on the laptop and to an input (rca or...
Popularity: 133 • Tools: Recategorize
How do you split cable internet to get cable television in your home?
Just use a 2-way coax cable splitter available at any Radio Shack. You have to make a split off the main line to your home for...
Popularity: 130 • Tools: Recategorize
Why would a new UPS cause humming in your PA system?
You have a bad or weak ground, or the UPS is creating a magnetic field from the power supply in it that is being picked up and...
Popularity: 130 • Tools: Recategorize
Why was LCD invented?
LCD, or the liquid crystal display, weren't "invented" for use in televisions. Televisions are just one application of liquid...
Popularity: 130 • Tools: Recategorize
Why is a DVD able to store 4.3GB of data even though it is the size of a normal CD?
Single layer recordable DVD's can store 4.3GB of data. Data is stored on CD's and DVD's via reflective and non reflective pits on...
Popularity: 125 • Tools: Recategorize
What cleans scratched DVD discs?
There are a couple of directions to go here. you can buy a product called BRASSO that ia used as a brass polish but can also...
Popularity: 125 • Tools: Recategorize
What is the difference ttl and cmos?
{| ! CMOS ! TTL | CMOS has good packing density. TTL takes up more space CMOS has better noise immmunity. TTL has a smaller noise...
Popularity: 124 • Tools: Recategorize
How was an electromagnet used in the first telephone?
The crank on it formed a generator and the field in the bell coil made it ring.
Popularity: 123 • Tools: Recategorize
Can you rewire a brain monitor or a heart monitor or one of those things that goes on your finger to have an audio output instead of a visual one?
Yes you can, but you need knowledge of electronics (personally i do not wish to go into detail because i do not know...
Popularity: 122 • Tools: Recategorize
Can you change a 304 microfarad 370volts capacitor with a 305 microfarad 370 volts capacitor?
In most cases, yes. Unless you're in some high precision device, you're probably working with a 5-10% tolerance which would allow...
Popularity: 122 • Tools: Recategorize
How do you find the remote wire in the back of your CD player?
Usually the remote wire is the blue wire. Although not all cd players have a remote wire. The easy way to find out if you're...
Popularity: 122 • Tools: Recategorize
Where can you find the place for wiring harness?
http://www.premieraudio.com all makes for OEM app.
Popularity: 122 • Tools: Recategorize
What is the most powerful business 2-way radio you can get that doesn't require a license and where can you get it?
Look for MURS, (Multiple User Radio System) radios. They can be found in a lot of tool and contractor supply catalogues and on...
Popularity: 120 • Tools: Recategorize
What is person to person networking?
person to person networking is also called "peer to peer" or for short P2P. P2P is basically what Napster was, but it is now...
Popularity: 119 • Tools: Recategorize
How many hours can be recorded with a DVD Recorder single layer disc?
21 mins on a mini, 2 hours of good quality mpeg4 encoding, 4 gig disc Actually you can have up to around 8 hours on a single...
Popularity: 119 • Tools: Recategorize
Why is your dryer blowing only cool air?
I was having the same problem, and it turned out that the dryer was overheating and shutting itself off. The problem was that...
Popularity: 117 • Tools: Recategorize
Why is a start bit used in asynchronous communication?
Asynchronous (serial) communication means that all the necessary decoding information is carried in the data stream, with no need...
Popularity: 116 • Tools: Recategorize
What size resistor is needed to allow a 220 volt coil in a relay operate on 277 volts?
You will need to know the amount of current flowing through the coil when 220 volts is applied across it. A resistor in series...
Popularity: 115 • Tools: Recategorize
How do electronics work?
In a very general way, it can be said, that electronic things work, by the successful manipulation of the flow of electrons, to...
Popularity: 114 • Tools: Recategorize
What would cause 2 outlets to stop working in one room when anything is plugged into a third outlet When the item is unplugged the other 2 oulets work again?
Check for a loose wire connection on the sides of the outlet that you plug into that causes the other two outlets to stop...
Popularity: 111 • Tools: Recategorize
I have halogen lights in the bathroom one day they kept flashing on and off and now dont come on at all if you try to switch them on the trip switch for all lights in the house goes off If you turn?
halogen lights get very hot. bath rooms are very damp places. there may be a thermal breaker built in to the light that when...
Popularity: 110 • Tools: Recategorize
What economical device - varistor - transistor etc can you use to supply power to a relay until the voltage drops to 10.5 volts?
A zener diode, a transistor, a rectifier diode, and a few resistors. A 10.5V zener diode will conduct until the voltage across it...
Popularity: 109 • Tools: Recategorize
Can you put metal in a microwave oven?
NO, it will spark and maybe smoke. NO BAD IDEA. Metal will cause the magnatron to over heat and the oven will be useless. Don't...
Popularity: 108 • Tools: Recategorize
How can you make a electronic device that will buzz only if you separate it from the base unit to a distance after 3 metres probably work using frequency?
To create a device such as this one would chose a freguency is of a clear band width (avoid the upper frequency FM range) and mke...
Popularity: 107 • Tools: Recategorize
What is a BC611 radio?
cop radio- Not quite. The BC-611, or SCR-536, are two of the names/numbers for what is often considered THE FIRST of modern hand...
Popularity: 105 • Tools: Recategorize
How many robots work in factories today?
Tens of millions I'm sure. They range from Jet Planes to making microwaves. They are in just about every industry, I don't think...
Popularity: 101 • Tools: Recategorize
What is the difference between transformers and adapters?
A transformer is a component that changes AC current from one voltage to another. A transformer consists of two coils, one...
Popularity: 79 • Tools: Recategorize
How can you make an amplifier for a contact mic using batteries?
I think you are talking about a pre-amp for a mic. Search CB Radios and you will see alot of battery powered mics.
Popularity: 78 • Tools: Recategorize
Where are computers made today?
Intel makes most of the chips. Their headquaters are in Santa Clara, California, USA. But they might make their chips in China or...
Popularity: 75 • Tools: Recategorize
When was the first electronic computer invented?
Professor John Atanasoff and graduate student Clifford Berry built the world's first electronic-digital computer at Iowa State...
Popularity: 71 • Tools: Recategorize
What are the uses of logic gates?
logic gates are in fact the building block of digital electronics , they are formed by the combination of transistors (either BJT...
Popularity: 70 • Tools: Recategorize
What are the uses and misuses of electricity?
electricity is used to do with some that rakes power like computers, tv and radios there are so much things that are used with...
Popularity: 69 • Tools: Recategorize
What is three dimensional printing?
Three Dimensional Printing is a process under development at MIT for the rapid and flexible production of prototype parts,...
Popularity: 68 • Tools: Recategorize
How do you determine the value of the feedback capacitor connected between the emitter and collector of the output transistor in an FM transmitter?
This is a vague question. Which transistor, and what is the make of the FM trasmitter? What do you really want to do, design an...
Popularity: 67 • Tools: Recategorize
Can you play Game Boy Advance games on a Nintendo DS?
I have DS and yes, I am able to play Game Boy games on it, as well as Game Boy Advance and Game Boy Color games. Answer # 2 I...
Popularity: 66 • Tools: Recategorize
How does digital cable compare to analog cable?
About the same as VHS compares to DVD.
Popularity: 65 • Tools: Recategorize
In megaman white 3 where do you get the hammer that lets you get past monolith in the secret areas?
you go to acdc
Popularity: 65 • Tools: Recategorize
Does a frequency counter help a cb radio that much?
For CB's that are both modern and "legal" a frequency counter does not help much at all. However if you have an older radio with...
Popularity: 65 • Tools: Recategorize
What is the serial number or product key for Norton anti virus software?
The serial number would either be on the back of the CD case or within the documentation that came with your software when you...
Popularity: 65 • Tools: Recategorize
What is the best home karaoke system?
A home Kareoke system to get would be Home Kereoke by HAsbro for the little ones or Sing, Sing, Sing by Sing like the Stars
Popularity: 64 • Tools: Recategorize
What is Cycle of data processing how does it work?
The data processing cycle is the order in which data is processed. There are four stages; Data collection Data input Data...
Popularity: 64 • Tools: Recategorize
What would happen if there were no television?
One would be that we would not be as knowlegeable about he world around us. We see every event in the world where there is a...
Popularity: 62 • Tools: Recategorize
How do you wire a three phase motor to a three phase power supply?
Connect the 3 conductors of the power source to the 3 conductors of the motor turn the motor on for a brief moment to note the...
Popularity: 61 • Tools: Recategorize
How do you reset the Parental Password for a Play-station 2?
hit select
Popularity: 61 • Tools: Recategorize
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...
Popularity: 60 • Tools: Recategorize
What is meant by PID?
In the Navy in the 80's and 90's it was an acronym for Personal Injury or Death. It was the title of a safety report that needed...
Popularity: 59 • Tools: Recategorize
Can headphones be used with a television that has no headphone jack there are in and out audio jacks?
If the television has audio out jacks you can use a wireless headset, or you can connect the audio out to an amplifier that has a...
Popularity: 59 • Tools: Recategorize
How do you repair Nintendo DS shoulder buttons?
Before any of the following, try either simply blowing on the button (where it meets the case) really hard (don't spit in it) or...
Popularity: 59 • Tools: Recategorize
How well does the Suzuki 1400 cc Intruder handle?
The Intruder does handle fairly well compared to its' counterparts of the cruiser class, by handling I would assume your talking...
Popularity: 59 • Tools: Recategorize
What is the difference between a DVD recorder and a DVD burner?
Hi, DVD Recorder records from Tv, other movies music etc...With DVD Burner you can actually make a DVD (like copy a movie or...
Popularity: 58 • Tools: Recategorize
How do you change the caller ID so when you call someone your name is displayed instead of 'unavailable'?
This is a function from your phone company. If it is showing as unavailable then Caller ID is not available from the phone number...
Popularity: 57 • Tools: Recategorize
What electronics use a 220 plug outlet?
I do not know of any electronic componets that use a 220 plug outlet for every day homeowner use. 220 outlet plugs are very large...
Popularity: 57 • Tools: Recategorize
Who invented the radio?
The inventor of the radio is widely disputed. So who gets the credit? Nikola Tesla? Guglielmo Marconi? Reginald Fessenden? Oliver...
Popularity: 56 • Tools: Recategorize
What is the type of lamp uses with dimmer switch?
You cannot use most fluorescent lights with a dimmer. Just about any incandescent bulb WILL work with a dimmer. Occasionally,...
Popularity: 56 • Tools: Recategorize
What are the best alarms out on the market right now?
home alarms? car alarms? what?
Popularity: 54 • Tools: Recategorize
How do you connect a TV to a TV?
Couple of ways to do this, depemds on your video out options on your tv. Go from the TV out on one Tv to the in of the other. ...
Popularity: 54 • Tools: Recategorize
What battery has the longest life?
I have done resarch for science fair and the battery that last the longest is definitly Duracell
Popularity: 54 • Tools: Recategorize
What would cause a coin operated machine to operate when the slider is slid without coins?
you could always try the trick with the coin and the string. if your gonna try it, i would reccomend a little piece of duct tape...
Popularity: 54 • Tools: Recategorize
Can they make a hearing device or a new kind of ear or something that allows you to switch from being able to hear above or below whatever frequencies you can hear already?
I don't know the principle of operation, but years ago in "Popular Electronics" magazine, there was a construction article for a...
Popularity: 53 • Tools: Recategorize
Whats the best way to clean your DVD 5 disc changer?
Since there is still only one lazer, using a regular dvd cleaner and following the instructions would work the same as if it was...
Popularity: 53 • Tools: Recategorize
Is it possible to connect three monitors to a single CPU?
http://support.microsoft.com/default.aspx?scid=kb;en-us;307873 This article indicates that WinXP supports up to 10 monitors....
Popularity: 52 • Tools: Recategorize
How do you determine what kind of amp wiring kit you need?
First of all you need to know how many watts your amp is. Next go to a place that has the kits. The kit will usually tell you...
Popularity: 52 • Tools: Recategorize
Does a plasma TV have a color gun that displays the picture?
By screen name Chris -- Plasma TVs use thousands of sealed, low pressure glass chambers filled with a mixture of neon and...
Popularity: 51 • Tools: Recategorize
What parts are needed to make an ever-lasting flashlight?
Popularity: 51 • Tools: Recategorize
How do wireless antennas share information?
they dont. An antenna is simply a piece of metal hooked to a device (normally a radio or a walkie-talkie). A receiver (for...
Popularity: 51 • Tools: Recategorize
Can you use mini SD card in normal SD reader and how?
Yes we can,by using the mini SD adapter. Don't buy a mini without the adapter.
Popularity: 51 • Tools: Recategorize
How do you figure the watts of a 110 volt pump that is 135 hp and has an amp draw of 54?
Yes, power = voltage x current = 54 x 110 = 5940 watts. But the odd thing is the rated horsepower. I was taught that one...
Popularity: 50 • Tools: Recategorize
What are the problems faced by a consumer. Give an example?
The consumer's main problem is that they may have more money than sense. Consumer problems can be many. Some concerning not...
Popularity: 50 • Tools: Recategorize
Are there any Ar codes for yugioh world championships 2007?
yes if anyone wants any AR codes for pkmn platinum or D+P i will make them for you. send me what you want and i will make them...
Popularity: 49 • Tools: Recategorize
Why is current represented by the letter I in electronics?
One explanation I was given was that when a letter was needed to represent current in formulas, C had already been used, and it...
Popularity: 48 • Tools: Recategorize
How do you make lights go on and off slowly and continuously as if they are breathing?
There are electronic devices called voltage oscillators that can do this. Check out some electronics hobby magazines or books, or...
Popularity: 48 • Tools: Recategorize
How to print the code of a program in the output terminal when the program is being executed in cpp?
Such a program is called a Quine. http://en.wikipedia.org/wiki/Quine_(computing)
Popularity: 47 • Tools: Recategorize
How do you connect five speakers from your old hi-fi to a laptop?
Don't! Your laptop output was not designed to drive speakers directly! It won't work or you will burn out the output stage. ...
Popularity: 46 • Tools: Recategorize
How many turns do you need on a ferrite core transformer with a 1cm by 1cm square center leg at 14 volts and 100Khz switching speed to maintain a Tesla equal to or less than 0.15?
Sorry, this question is unanswerable in the form you ask it. In order to answer it would be necessary to know what is meant by...
Popularity: 46 • Tools: Recategorize
Where is a social security card placed when being faxed?
the easiest way to fax a ss card or any other card for that matter is to go to a copy machine, put the form on the glass, print...
Popularity: 45 • Tools: Recategorize
Which voltage under-cabinet lighting of the 25 inch puck-type style would produce more heat 12 volt - low voltage - or 120 volt - if both bulbs are rated at 20 watts?
As Watts is equal to volts times amps and amps produce the heat not the volts the lower the voltage the higher the amperage to...
Popularity: 44 • Tools: Recategorize
How do you work out how much electricity an appliance uses?
There should be a label on the appliance that gives the amount of energy/wattage it uses. it could be on the bottom, side,...
Popularity: 43 • Tools: Recategorize
