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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

In direct current charges carries have a drift velocity but in alternating current there is no net velocity of the charge carriers. Explain why?

In direct current the charge carries always flow in the same direction, while in alternating current they change direction repeatedly, meaning overall there is no net direction.

What is an up-down counter?

A digital counter than can count both up and down, selected by a control signal.

What is the need of having a GMSC in GSM network when there is an MSC?

A normal MSC will connect BSC to the PLMN/PSTN Network directly. Meaning to say it will need to do the call connections and management from BSC all the way to PLMN/PSTN network. Once the network expands, the MSC will face congestion and therefore a solution needed.

GMSC - Gateway MSC, as the name implies, will in this case serve as an interconnection between MSC and PLMN/PSTN Network. Thus this free up the resources of the MSC itself need to perform all the originally tasks.

How a single LED showing many colors?

It actually has more than one LED inside the same package. For instance, a package with red, green and blue LEDs inside can produce any color by mixing these three colors together.

Making of X-nor gate with the help of ic?

the easiest way to make an xnor gate is with a 7486 (or equivalent) integrated circuit, a quad xor gate. connect the output of one gate to one in put of another gate. connect the other input of the second gate to Vcc. the second xor gate will then act as an inverter.

What is an example of a negative feedback?

When there is a problem in the body, e.g. too much glucose in the blood, a message is sent to the hypothalamus in the brain. the hypothalamus sends a message to the pancreas to release insulin. when the muscles bind insulin, they take in the glucose in the blood, and store it as glycogen.

However, when the blood glucose level then drops below what it should be as the muscles are still taking it in, a message is sent back to the hypothalamus to stop the signal to secrete insulin. This message back to the hypothalamus is called negative feedback.

What is use of spike buster in relay?

A: I never heard of a spike buster but if you are from England I would understand the different terminology. The use for the spike buster is to protect the driving circuit from negative spikes generated by the relay coil as it releases the power stored in it. The DIODE [ SPIKE BUSTER] will clamp harmlessly the negative spike to .6 to .7v negative which will harm the driving circuit Without the diode hundreds of volts can be generated destroying the driving circuit

How do you praise my self?

well, when you complete something that you are proud of, smile at yourself, give yourself a pat on the back, or reward yourself with a treat or a walk or something

How to explain Bit Synchronization?

- synchronization in which the decision instants is brought into alignment
with the received bit,i.e, the basic signaling element.

- it is used to generate a clock signal at the proper sampling instants. - it consists of non linear element followed by phase locked loop ( PLL ).

What is load line concept?

A load line is used in graphical analysis of nonlinear electronic circuits, representing the constraint other parts of the circuit place on a non-linear device, like a diode or transistor. It is usually drawn on a graph of the current vs the voltage in the nonlinear device, called the device's characteristic curve. A load line, usually a straight line, represents the response of a linear circuit connected to the nonlinear device in question. The operating point(s) of the circuit are the points where the characteristic curve and the load line intersect; at these points the current and voltage parameters of both parts of the circuit match

What is preset terminal in flip-flop?

A preset terminal in a flip-flop is an input that allows the user to set the output to a specific state, typically '1', regardless of the other inputs. When activated, it overrides normal operation, forcing the flip-flop to assume the preset state. This feature is useful for initializing the flip-flop or for certain control functions in digital circuits. It is often labeled as "PRE" or "SET" in circuit diagrams.