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Electronics Engineering
Electronics Engineering is a branch of engineering that deals with practical applications of electronic components, devices, systems, or equipment. Electronics are devices that operate on low voltage sources, as in electron tubes, transistors, integrated circuits, and printed circuit boards and use electricity as part of its driving force.
24,372 Questions
Resistors placed in series create a total resistance that is found by simply adding the values of the resistors. (Knowing the applied voltage isn't necessary to solve this problem.) Rt = R1 + R2 + R3 = 2 ohms + 4 ohms + 6 ohms = 12 ohms
Importance of chemistry to science and technology?
Chemistry is science. It is one of the natural sciences.
Its importance is all around you. Men get up and use shaving cream. Chemistry keeps it fluffed out unlike soap. Women put on lipstick. Chemistry keeps it solid and looking good rather than the colored lacquer once used. You take some pills. Your cotton clothing may have water repellent yet still breathe. You look at the paint on your walls. You do not need to repaint after 3 years.
If you live in or near the United States, sometime visit Plymouth, Massachusetts. This village depicts the life of the first English settlers. This presents the world before changes made possible through chemical engineering existed.
What is the difference if a switch is before or after a bulb in a circuit?
It is a safety concern. With the switch before the bulb, the bulb is completely isolated from the potential source when the switch is turned off. With the switch behind the bulb, even if the switch is turned off, the potential source is still at the bulb. If any of these lamp holder parts touch the ground when removing the bulb the circuit will short out and trip the breaker. If you are grounded and touch any of the lamp holder parts you will get a nasty shock.
Can use 14.4 volt charger to charge 18 volt battery?
NO, the output voltage of a charger must be greater than the rated voltage of the battery, usually at least one and a half to two volts difference.
Are inductors measured in ohm's Henry's or reactance?
Inductors can be measured in all three of the above:
When an the value of an inductor is given in henrys you are being given its "capacity" to store energy in a magnetic field.
Because the inductor is not made of a perfect conductor (one without resistance) it will inevitably has some associated resistance. This is the value that is being referred to if the value of ohms is given.
If an inductor is part of an AC (alternating current) circuit it will have a changing "resistance" (resistance as seen by the source) that is directly related to the frequency of the circuit. This is where the reactance value would be given. It equation is given as: 2*pi*f*L. Where f is frequency in hertz and L is the inductance given in henrys..
Advantage of a transformer over a transformer coupled circuit?
Sounds more like a "homework" or "test" question, rather than a real-world question, and vague, at that!
Could you re-phrase your question in a better, more-precise context, or check it for typos? Right now, your question seems to ask "What's the advantage of using a transformer, instead of using a transformer-coupled circuit?"...which makes no sense, since a "transformer-coupled circuit" USES a transformer.
What is the difference of a fixed regulator from an adjustable regulator?
A fixed voltage regulator outputs only one specific voltage.
An adjustable voltage regulator can be adjusted to output any voltage from the range it was designed for by changing the output resistors.
What is the difference between Telecommunication and Mobile communication?
the difference between Telecommunication and Mobile communication that , tele related to wire communication and mobile related to wireless communication
What is the range of laser communication?
There's no set limit, it depends on the power of the laser and the sensitivity of the receiver.
Variable resistor is a passive component where we can vary its resistance simply by rotating it's head .These resistors are available from few ohm to several mega ohm. and are used for regulator or gain control in amplifier circuits. It is three terminal device.
A conductometer (conductivity meter) is an instrument designed to measure the electrical conductivity.
What is the need of delta modulation?
if you are talking about a plane then its to set new modes unpromising if you will
Convortion of moving coil galvanometrr into voltmeter?
A galvanometer can be converted into a voltmeter by connecting it with very high resistance.
How do you read the voltage zener diode by coding?
You cannot read this directly from markings on the device. The markings on diodes (of any type) whether printed characters or color bands indicate the manufacturer's part number. Once you have read this part number (if it is given with color bands you will usually need to add the prefix "1N"), you must look this part number up in a databook. The databook entry for that number will give you all the device parameters.
What about it? It's a discontinued 4 channel rack-mounted noise gate. The new version is XR4400
Does a computer have a resister?
probably several million of them as well as several million transistors biased to act as high resistance resistors (because a transistor takes less area, and is therefor cheaper, than an actual bulk silicon resistor of those values in an IC) doing various different functions. maybe several billion of them.
Why current fluxcuate in collector current?
I suppose you mean "fluctuate".
Collector current depends mostly on the base current,
If the base current changes, the collector current will change in proportion.
What is the Definition for ohms?
Ohm is the unit for electrical resistance. The definition is given by Ohm's Law: resistance = voltage / current; in SI units: ohms = volts / amperes. For example, a resistance of 1 ohm would result in 1 ampere of current for every volt applied.
Oscillators produce a waveform (mostly sine or square waves) of desired amplitude and frequency. They can take input from the output itself. For a complete oscillator circuit we require a feedback device, amplifier and feedback factor.
Lm in integrated circuits stands for what?
LM stands for "NATIONAL SEMICONDUCTORS". i.e, that particular ic has been manufactured by "NATIONAL SEMICONDUCTORS".
infact on any ic two letters indicate the manufacturing company's name,eg MC stands for Motorola(now freescale),SN for Texas instruments,NS for signetics, CM for California microelectronics and so on...
What instrument measures the electric equipotential?
Multimeter is an instrument that measures electric equipotential. Equipotential lines can be determined by connecting various points of electric potential or voltage.
What crystals are used in solar batteries?
A battery is an energy storage device (among other things). A solar battery is a term that might generally be used to describe an electrical storage battery that uses solar energy to charge it up. In that case, the solar cells, those photovoltaic cells that convert the electromagnetic energy of sunlight into electrical energy, are actually semiconductor crystals. Silicon forms crystals, and if we add things to it, we can give it different properties. Semiconductors are those "solid state" devices made usually of silicon which has some other elements added to it to create the actual semiconductor crystal structure. This crystal structure, whether it is a simple transistor or a hugely complex microprocessor, is manufactured with a set of desired properties in mind. In the case of the solar cell, the semiconductor matrix is made to convert light directly into electricity to charge the battery.
