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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

Who invented electrical circuits?

There is no "inventor" of circuits. However, there are several people who discovered properties of electricity and circuits, as well as people who created devices that the electricity in a circuit.

A tamagotchi parent code?

srry, cant help u, im still trying to find out for myself so as soon as i find out, ill forward it 2 u... anyways, im sure u already figured it out anyway. -anserme1234

How do you find proctor and gamble coupons?

You would want to check your Sunday newspaper for P&G Inserts. You can also sign up online, however the bulk of your coupons will come from your local paper.

How can you break a magnet?

Heating the magnet to very high temperatures, hitting it very hard e.g. with a hammer, and exposing it to a strong, random magnetic field would work. Do not try these at home!! Magnets contain aligned, spinning molecules to create a strong magnetic field. The above methods break the alignment of the molecules, destroying the magnet.

How does the gts work?

it connects to the sattelites orbiting around earth so it can see where you are

What should be done with the unused inputs of a TTL integrated circuit?

Unused ttl inputs would normally default to logic 1 if left floating. but these inputs could act as antennas under certain conditions and they could pick up noise which can cause the circuit to malfunction. it is better to tie unused inputs to Vcc through a 1k resistor (74LS, 74XX etc) or simply return the inputs to ground. for most other ttl families, the 1k resistor might not be required.- Stan (Nigeria)

How do you correct the problem when you have to drive two transistors in saturation mode from a single input and one operates properly while the other misbahaves?

Use two resistors to separate the load between the bases of the transistors, thereby limiting the current. What's happening is that the base of one transistor is absorbing most of the current while the other transistor isn't getting its share. If you're driving them into saturation, you only need just enough current to accomplish the task. The excess will just end up being dissipated as heat, which won't be good for the transistor.

Time to do the math: operating voltage, minus the base voltage plus .6V (for the emitter/collector junction diode effect), divided by the max base current, equals resistance to drive the transistor into saturation. By limiting the current you help prevent the transistor from going into thermal runaway and destroying itself.

Is the phasor a time-domain or frequency-domain quantiy?

It is a frequency-domain quantity. In Basic Engineering Circuit Analysis by Irwin, the time domain is written as A*cos(wt+/-THETA) and the frequency domain is written as A*phasor(+/-THETA).


A series of phasor measurements, taken at regular intervals over time, can sometimes be useful when studying systems subject to variations in frequency. The electric power system is one example. The power grid nominally operates at 50Hz (or 60Hz), but the actual frequency is constantly changing around this nominal operating point. In this application, each individual phasor measurement represents a frequency domain quantity but a time series of phasor measurements is analyzed using time-domain techniques. (http://en.wikipedia.org/wiki/Synchrophasor)

How much does it cost to fix an lcd screen in regular phones?

Depending on the phone it could easily be more than the cost to replace the whole phone.

When is sportfisher ultra450z fishing reel manufactured?

The Sportfisher Ultra450Z fishing reel is manufactured in various production runs, but specific details about its manufacturing dates can vary. Typically, these reels are available in the market depending on the brand's release schedule. For the most accurate information on manufacturing dates, it is best to consult the manufacturer's website or contact their customer service directly.

Why won't the Whirlpool Duet Electric Dryer heat up after the 220 fuse box blew out what could be the problem and how do I correct it?

Your heating element is going out and that is why the fuse blew as well. You will need to have the heating element replaced in order for the dryer to work like it did when you bought it.

What is the application of ic 4001 quad 2 input nor gate?

Its a very versatile chip. It can be used in many places where logic control is required. As there are four identical NOR gates in one package, the inputs and outputs can be configured to make up quite complicated logic gates.

Being a NOR gate, the the output will be at supply level, until one or both of the inputs are taken high. At which point the output will go low.

The uses are many and varied. The 4000 series of chip are CMOS, so they can work at voltages between 5 and 12volts at low current.

Can't find a slim flat back 1080p 40 inch TV?

amazon.co.uk/Samsung-UE40B7020W-Widescreen-Television-Freeview/dp/B001UE8LYC Your welcome