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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
Moving a wire through a magnetic field does not create a current flow in a wire?
Not true - Moving a wire through a magnetic field doescreate a current flow in a wire.
false
How do you draw a circuit diagram of an electric blanket?
The way I have done this with things such as heaters, window defrosters, etc. is to model the heating element as a resistor (or a set of resistors in different parallel and series combinations, based on the layout). The wire used in the electric blanket (the heating elements) should have a specific resistance per length; calculate the length of the different sections, and create a lumped resistive element of this total length.
What is the best online resume builder site?
Everyone is used to the stuff he/she is using himself. For me it is uCoz and Wordpress. If I need a blog - I use Wordpress. If I need a website - I use uCoz modules. The understandable interface of the service is also very important. Good luck!
Definition of buffer in digital electronics?
A buffer is a means of isolating a signal source circuit from the loading circuit. They are generally needed when the signal source does not have sufficient capacity to deliver the current demanded by the load circuit. If buffers are not used, a problem called input loading results and this may cause the circuit to malfunction or to become damaged.
In digital circuits, the buffers reproduce the sequence of 1's and 0's received from one circuit and make them available to another circuit at a higher power level. A buffer is like a non-inverting amplifier with a gain of unity.
Three formulas are used to solve this problem V = Ed, C=(AKE0)/d and Q = CV.
V= Electrical potential (voltage)
E = Electric field (or Electric strength in this case) (3*106 for air
d = distance (plate separation
C = capacitance
A = Surface area (9*10-4 m2)
E0 = 8.85 * 10-12
K = Dielectric constant (roughly 1 for dry Air)
Substitute C and V from the first two formulas into Q = CV.
Q = (AKE0)/d * Ed
the distance cancles and you end up with Q = (AKE0)E.
Substitute in your numbers to find Q
What are the current measurements of capacity in a computer?
Computer storage is usually measured in bytes. A byte is equal to 8 bits. A bit is a single piece of binary information (a 1 or a 0).
For example, if you have 16 ones and zeros of information, then that is 16 bits, or 2 bytes.
1,000 bytes is called a kilobyte; 1,000,000 bytes is called a megabyte, and 1,000,000,000 bytes is called a gigabyte. Today's computers store many billions of bytes, so these days you'll see a computer storage capacity measured in GB (gigabytes). For example, I have a computer at home with 500 GBs of storage. Therefore, it holds 5,000,000,000 bytes.
However, it gets confusing when the number of bytes in a kilobyte, or megabyte, etc. is calculated using powers of 2, which is historically how it has been done. Things like kilobyte, megabyte, etc. needed to be expressed as a multiple of 2. Therefore, a kilobyte, instead of being strictly 1,000, is 2^10 = 1,024 bytes. A megabyte is 2^20 = 1,048,576 bytes. Therefore, let's say you have a disk that can hold 450,000,000 bytes. Using the binary definition of megabyte, that is 429.15 MB, and not 450 MB. This has led to consumer confusion, when someone buys a computer that claims 750 MB but Windows reports 715.256 MB.
What are military and mobile applications of Optical Fiber Communications?
optical fibre milatary applications
Which field of an Ethernet frame is used for error detection?
c) Check frame sequence. The FCS (4 bytes in length) field is used to detect errors in a frame
Half the screen goes black on my 42 plasma sansui flat screen tv what the problem?
You have a burned out matrix driver section most likely. Only cure for that is to have a new one installed.
Difference between flux linkage and flux leakage?
i) leakage flux is those flux which goes through the air and linkage flux is those flux whose go through the cell.
ii)leakage flux is the loss at flux but linkage flu is warning flux.
iii)leakage flux is cause of eddy current loss and linkage flux is case of copper loss.
NDC - DDC which is base for working on ATM related software projects.
What is the difference between the sensor and the transducer?
In the general case, a sensor is the complete assembly required to detect and communicate a particular event, while a transducer is the element within that assembly which accomplishes only the detection of the event. At the risk of getting too abstract, a transducer converts an input to an output that can be exploited to accomplish the sensing mission.
For example, a pressure sensor may use a diaphragm and/or strain gage to "detect" pressure differential across the diaphragm, but he complete sensor will additionally consist of a display element and the electronics required to energize and condition the output of the detecting transducer, as well as the elements required to house and drive the display feature.
A compass is a simple sensor of magnetic north, wherein the magnetic element in the compass is the transducer or "north detector" and the needle, housing and compass face comprise the remainder of the "north sensor".
In special cases, a sensor and a transducer can be the same. For example, a bi-metallic spring element can both detect temperature change, and may well be the entire sensor if a pointer is attached to the bi-metalic spring.
A diode is an electronic component that will only allow current to flow through it in one direction. It is analogous to the valve in a bicycle tyre, which only lets air in but not out (except when you press the release tab). So if you connect a diode in a simple DC circuit one way around, the circuit will be closed and any devices on the circuit will work. If you connect it the other way around the circuit is open and no current will flow.
I presume by 'ordinary diode' you mean a diode that is not a light emitting diode (LED). A LED is just a diode that emits light when current flows through it. Its purpose is to make light. A non-LED diode doesn't emit light. Its purpose is to allow current through a circuit in only one direction.
A common use for ordinary diodes is in "rectifying circuits" which convert AC to DC.There are many other uses though.
What are the major components of power electronics system shown in block diagram?
Sorry I could not read the attached block diagram. Most power electronic systems have a power supply. The circuit would also need a component to vary the amount of electricity to the machine being controled. An on_off switch would be useful.
If the output power is 70% of the input power, then the output is roughly 1.55 dB down
compared to the input.
If the voltage at any point of the output waveform is 70% of the voltage at the same point
on the input waveform, and the input and output impedance are equal, then the output is
3.1 dB down (rounded) compared to the input.
What does the control module do on an electric scooter?
Controls the application of voltage to the motor to control speed and direction of the motor. If there is a built in charger it would also control the charging process.
Measure the voltage across a voltmeter and a switch?
If the switch is closed (connected) the voltage across it will read 0V. If the switch is open (disconnected) the voltage across it could be anything, it just depends on what the voltage between the wires going into the switch is.
Such a circuit would be called a voltage divider.
The circuit would consist of two or more resistors in series across a battery or other voltage source. Each resistor would drop a certain amount of voltage (proportional to its resistance), and by considering the voltage drops, the investigator could pick two points in the circuit from which to take (or "pick off") the desired voltage needed for a project. Let's look at just one example.
If a 12 volt battery has two 1K ohm resistors in series across it, each resistor will drop 6 volts. By connecting wires from each end of one resistor, the 6 volts can be "picked off" and used to do something else. Certainly there are limitations concerning how much current can be drawn from the circuit (called loading the circuit), as the "diversion" of current around the resistor that is providing the voltage will change the voltage that is being picked off. But for small amounts of current, the voltage divider will work adequately.
What are the most common soldering mistakes and how are they identified?
The most common thing is farting while soldering you then jam in it your eye and die gg new game
How do you measure the resistance of a 30-amp cartridge fuse in ohms?
Set a Volt-Ohm meter to Ohms and put the two leads from meter across the fuse. One on each end where the metal is located. The meter should read zero ohms if the fuse is NOT blown.
