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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
Nothing has been found about the electrical conductivity of carbon compared to other conductors. It is not a semiconductor.
Why flip charts arte necessary?
Flip charts are necessary because they provide a visual aid that enhances communication and engagement during presentations or meetings. They allow facilitators to illustrate ideas, capture audience input in real-time, and summarize key points effectively. Additionally, flip charts are versatile and can be used in various settings, making them an invaluable tool for brainstorming and collaborative discussions. Their tangible nature encourages participation and helps retain information better than digital formats alone.
When powering an op-amp from a single voltage source should vss- and common ground be connected?
It depends on what you're trying to do. If you need a comparator or a trigger, then, no. If you're using it for audio or some other type of AC signal, then you need to set up a 1/2 vcc. reference to allow the op-amp to swing from plus and negative voltages.
Since the op-amp is a voltage controlled device, you can use a coupe of resistors in series, one from the plus rail and one from the negative rail, connecting the "ground" reference to the junction of the two. Just about any value will work as long as they're matched values. Try using a couple of 100 k. resistors or you can even go up to 470 k, if you really want to keep the current limited.
Bear in mind though that there are applications where offsets are needed, but without knowing your particular applications' requirements, there's not a lot of advice I can give you.
A backplane is similar in concept to a motherboard, except it contains no significant electronics (i.e. all of the electronics components are on boards that plug into connectors on the backplane), a motherboard usually contains significant amounts of electronics components and may or may not have several connectors connected similar to those on a backplane for optional boards that could add functionality to the machine desired by the user.
Some backplanes are not wired with all the connectors in parallel, but instead are wired "randomly" because every board plugged into the backplane has a specific purpose in the machine. These backplanes may not use any form of computer bus (e.g. address bus, data bus, control bus) or such buses may only be used to interconnect different backplanes within the machine or peripherals connected to the machine.
Backplanes have been constructed using hand soldering of the connector pins, wire wrapping of the connector pins (either by hand or automated machine), printed circuit board (either flexible or rigid), etc.
When many resistances are connected in series, the equivalent resistance is
greater than the greatest single resistance.
When many resistances are connected in parallel, the equivalent resistance is
less than the smallest single resistance.
What materials are partially conductive?
conductivity is a result of free electrons meaning that they can be riped away fast and the temperature of the material. a colder material has a lower resistance and higher conductivity. materials like metallic oxides have low conductivity and materials like pure copper and aluminum have high conductivity.
What are the factors that affect the resistance of a conductor?
The factors that affect the resistance of a conductor are the material it is made of, the length of the conductor, the cross-sectional area of the conductor, and the temperature of the conductor. Materials with high resistivity, longer lengths, smaller cross-sectional areas, and higher temperatures will have higher resistance.
AN RF Isolator is really a three port device called an "RF Circulator" in which one port is always terminated correctly with a suitable load. RF Isolator are usually passive and are bandwidth limited.
Typical use: It used in the output of a RF Transmitters High Power Amplifiers but before a BP/ HP filter and the antenna.
Typical Function: To isolate a TX RF Power Amplifier output from receiving RF feedback from external sources. i.e. In this case the RF coupled in from other Antenna systems in close proximity. Such undesired RF feedback would cause intermodulation / harmonics products to be generated within the RF amplifier and consequently be re-radiated out along the the desired RF signal to the antenna and possibly cause interference. Often used on all TX's in two way radios sites to avoid local IM.
SIMPLIFIED: In other words an Isolator passes RF in one direction but attenuates RF in the other direction.
Note: The RF Isolator is slightly non linear and therefore it can cause low levels of intermodulation / harmonics. So it is good practice to place either a basic Band Pass or High pass filter after the RF Isolator to attenuate the unwanted IM products.
Tuning these RF Circulators / Isolators correctly requires a suitable network analyzer or combination of RF Bridge / Spectrum Analyzer with Tracking generator.
Which is the best center to do your final year project related to ECE?
Phoenix Aero Technologies is a good project center in coimbatore. Aerospace, Mechanical and electronics projects as well as gate coaching is provided.
For more details visit: www.phoenixaerotech.com
or mail us at: dinesh@phoenixaerotech.com
Operations research.
What is current controlled current sources?
A unidirectional current controller device is a type of electrical on/off switch. In order for an item to work that is plugged into a particular outlet, the switch must be in the on position. It is like having lamps plugged into outlets that are controlled by only one switch.
What is the current through the 150 ohm resistor?
It depends on the voltage applied across it. But the maximum current is limited by the power-rating of the resistor (power divided by the square of the voltage).
Could The waveform across resistors have been predicted by kirchhoff's voltage law?
This Law does not talk about wave form
Continuous circuits are electrical circuits that provide a continuous path for current to flow without interruption. They consist of interconnected components such as resistors, capacitors, and power sources, allowing for the steady movement of electric charge. In a continuous circuit, the flow of electricity is maintained as long as the circuit is closed and the power source is active. This contrasts with open circuits, where the flow of current is disrupted.
What is the total resistance three resistors one 10k one20k one30k?
it depends on the way the 3 resistors are connected and across which two terminals you would like to measure...
if all 3 connected in series the simple...60k....if parrell then (1/10+1/20+1/30)^-1 k
What Cable is used for feeders and branch circuits?
For feeders and branch circuits, the most commonly used cable is the NM (Non-Metallic) cable, often referred to as Romex. This type of cable typically consists of two or more insulated conductors and a bare ground wire, all enclosed in a plastic sheath. In commercial applications, THHN/THWN wires within conduit are often used for feeders and branch circuits as well. The selection depends on factors such as the installation environment, voltage, and current requirements.
Any metal with a good conductivity can be used; normally thin copper or mild steel that is tin plated is used the later is less expensive.
