Consumer Electronics

Nutella

Lets put a value to the transformer, say 500 VA. Step down with a 5:1 ratio. Say 250 volts on primary. 250/5 = 50 volts secondary. 500 VA transformer/50 volts secondary = 10 Amps. Therefore the secondary would have to have the larger wire to accommodate the larger current.

Otis F. Boykin invented the wire precision resistor and the electrical resistor. In June 1959, he got the first patent for the wire precision resistor and in June 1965, he got his patent for the electrical resistor.

The most common voltage supply to homes is single phase 120V / 240V. In the states for industries, 3 phase 480 Wye 277. In Canadian industries, 3 phase 600 Wye 347 volts.

Peak DetectorA peak detector determines the peak voltage on an ac wave and converts it into a dc voltage. A diode puts the peak voltage on a capacitor. The second op amp is a buffer. This means it holds the same voltage input and output, but it allows current to be used at the output without altering the voltage. An op amp buffer is created by connecting the output to the inverting input.The purpose of the buffer in this instance is to tell the first op amp what the voltage is on the capacitor. In simple designs, this is done by simply connecting the inverting input of the first op amp directly to the capacitor. But the buffer allows a second diode to be used in the feedback loop without altering the capacitor voltage. The diode then pulls against the output of the buffer instead of the capacitor.The purpose of the feedback diode is to prevent the output from saturating on the down-swing. Saturation means the output goes to the supply rail, while excess current is drawn through the input, which can create undesirable effects. The feedback diode pulls the inverting input down to the same level as the noninverting input, which means the output is never more than 0.6V lower than the noninverting input or the bottom of the voltage swing on the ac input wave. The feedback resistor allows a difference in voltage to be created between the inverting input and the output of the buffer.The design challenge of a peak detector is in the fact that the diode pulls the voltage up but not down. Something needs to bring the dc voltage on the capacitor back down, either when the voltage being measured decreases, or when an over-voltage spike is created for some reason such as noise, contact of leads or turn on of the device.Leakage current through the diode when reverse biased will be enough to control the capacitor voltage when stable measurements are being made. At other times, more current is needed to bring the capacitor voltage down. A resistor can be used for that purpose. But it will then create some ripple on the capacitor, because it will be pulling voltage down while the diode is not pulling it up. The ripple is greatest for lowest frequencies, because then there is more time during each cycle for voltage to decrease. Therefore, low frequencies require some compromise between ripple on the dc and rate of equilibration.Here's how to calculate ripple on the capacitor. Start with this formula: V/S = I/C. It says volts per second equals current over capacitance. Say there is one volt on the cap. Divided by 10M of resistance equals 0.1µA of current. Divided by 0.47µF equals 0.213 volts per second. If the frequency is 10Hz, there is 0.05 seconds for each half of the wave. So 0.213V/S times 0.05S equals 11mV of ripple. If the frequency is increased to 1KHz, a half wave is 0.5mS, and ripple is 0.0005 × 0.213 = 0.11mV. If the cap voltage is increased to 2V, the ripple is 0.21mV, or twice as much, but the same percent.The rate at which the voltage equilibrates is not linear. At 1V on the cap, it is 0.213 volts per second; but at 2V, it is 0.426V/S. So it would take about 3-5 seconds to equilibrate when 1V too high. Pulling it down instantly with a push button switch is so easy that it is better than compromising the design or waiting for equilibration.

Pretty much all 303,591,568 of us. (yes, even the Amish and the homeless use electricity).

the percentage of people that use electricity is 97%! :D that also, means that only 3% don't use electricity. :(

Light and other electromagnetic waves do indeed travel as a wave. For that reason, light, radio waves and all other electromagnetic waves can be characterized by a wavelength. Different colors of light have different wavelengths in the range of around 400 nanometers to 800 nanometers.

However, they can also be considered to be particles instead of waves. In some branches of physics, the concept of light as a particle can be very useful. For most of us, treating light as a wave is quite sufficient.

A bottle to a half a bottle enjoy your trip

Yes, although if someone is not talking to you, the adapter will end the call after a while.

a 603 12F high current power, multi-emitter transistor.

I tried one of these items. within 30 days i was ready to admit myself to a mental institution. i would sit outside and cry because i didnt want to go in my house. I thought it was because of the 8 inch scorpion i found in my bathroom and was badly unnerved by this. which is very unusual for me because i catch scorpions, poisioness spiders, tarantulas, sidewinder rattlesnakes all the time.
I called doctors, institutions and everyone i could think of. I already have mental illness, and i have been shocked with electricity very badly, i was scared for my mind.
My mom prayed for me, and then i just knew it was that riddex box. I unplugged it and within 24 hours i was back to normal, for me at least. i have been trying ever since to get ahold of the company with no luck.
If only i had checked the internet first.
there are many places that say it doesnt seem to work on anything but ants.
but i have only seen one post about it bothering a person. i am still trying to find out more, be careful of all those products that have no customer support

Midi is used to record electronic instruments via Midi cables. It is like connecting a mic to your computer, except it is your instrument. Get it?

2021, 2058, 2272, 2273, 2436, 2449, 2480

I took mine to a specialist. This phone can only be unlocked using a data cable and specialist software. Don't mess about with it, it only cost £10.

We don't need a long, boring answer. It depends on what your 3-year old wants! If she really wants to straighten her hair, just keep these rules in mind:

1. Do it YOURSELF or find a responsible person to do it.

2. NEVER let her touch her hair or the iron while it's hot.

3. Apply a straightening cream/gel/spray (I recommend got2b) before straightening so it will maintain its healty shine.

4. Do it slowly and keep the iron away from her neck.

5. Be careful! Since toddler's hair tend to be fine and soft, put it on the lowest heat setting.

6. If she does burn herself, rinse it with cold water immediately and put an ice pack on it. If the burn is a severe (second or third-degree) burn, wrap it up LOOSELY and drive her to the ER.

Battery cells are conneted in series. Each cell of a 12v battery averages 2.1v when charged. SERIES 2-4-6-8 and so on

Yes, at the manufacturer website you can download (free) the drivers, manuals and all the installation files that come with the product CD upon purchase.

Industrial Training Institute

There have been threats made against KFC because of their treatment to animals. Many threats have been associated with members of the group PETA, but PETA itself has never threatened the company.

A converter that you plug into a socket. It will depend on what part of Europe you are in. Ireland and Britain use a different system than mainland Europe does, so you have to know where you are going. You can buy them in any good department store, travel shop and definitely in many shops in airports.

the reason for that is because if a battery is not connected to a wall it will not get additional energy for its high potential electrons.

the reason for that is because if a batttery is not connected to a wall it is not getting additional energy for high potential electrons

Its not working, switched off, or the LCD plasma screen is damanged in someway.....

you can make a robot out of anything, it depends on what you are making. A short tool list for a good start is: needle nose pliers, hotmelt glue and gun, small screwdrivers or set of bits, boxcutter with the snap-off blades or Exacto knife. Some other handy things for more involved projects are: soldering iron with solder and maybe flux, drill and bits, vise grip pliers, set of picks, heat shrink tubing, press on wire connectors, collection of small bolts nuts and washers, small hammer. Remember, the hardware and crafts sections are your friends.

Ask in the computing category.

I HAVE A ATHLETIC WATCH FROM WALMART BIG FACE AW150 MODEL THAT WENT INTO MILITARY TIME. I HAVE THE INSTRUCTIONS BUT IT SAYS NOTHING ABOUT SETTING MILITARY TIME. HOW DO I GET IT BACK TO NORMAL TIME When the hour is set the watch goes through two sets of 24 hour choices, one set for regular time, one for military time. After pressing the lower left button three times and the lower right button once you are setting the hour of the time. When an 'H' appears to the right of the time, these are the military hour choices. Keep pressing the upper right button until the 'H' disappears (an 'A' appears to indicated AM hours), then the hours depicted are regular time hours. When the correct hour appears press the lower right button.