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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
What is the difference between resonance and resonant frequency?
resonance is the behavior of resonant frequency while resonant frequency is the cause of it. There are basically two types of resonance; Electrical and Magnetic. Resonant frequency is that particular frequency for a system for which the system performs its best. while the system at that particular situation can be called the system at resonance
Which resistance will be maxium in a circuit 'r' or 'R'?
There is no relation between the value of a resistance and whatever name you choose to call such a thing. But traditionally, for obvious reasons, use of the small letter r means there is an expectation that it will be smaller than one called R.
What is the change in current when frequency changes from 8 khz to 400hz?
That depends on the circuit. For a pure resistive circuit (no inductance and capacitance), the frequency will have no effect on the current.
What converts digital signals into analog signals for use with IDSN?
it is an DAC (Digital to analogue converter
Why does the theoretical yield differ from the actual yield?
The theoretical yield is the amount of product that we predict will be obtained, calculated from the eqquation. The actual yield is the amount of product that is actually obtained at the end of the procedure.
What is the advantage of film resistors over carbon resister?
Film resistors have lower noise than carbon resistors.
A signal pattern refers to a recognizable sequence or arrangement of signals that convey information or represent specific phenomena. These patterns can occur in various contexts, such as in communication systems, biological signals, or data analysis, where they help identify trends, anomalies, or behaviors. Analyzing signal patterns is essential for understanding underlying processes and making predictions based on the data.
R = r*L/A
where:
R = resistance
r = material resistivity
L = length
A = area
Since you are doubling the diameter, you are increasing the area by a factor of 4, so Y will have 1/4 the resistance of X.
When does the diode not allowed to flow the current?
A diode is a one-way gate for electrical current to flow through. You must have the right size diode for the amount of current that will be used in your circuit.
The stripe on the diode is your output end. That is, the current must enter your diode at the non-stripe end and leave at the end with the stripe. This coincides with the diode symbol used on your schematic. If your diode is in backwards, the circuit will not work as the gate in the diode will block the current just the way it should.
Given twelve 1 KOhm resistors, connected in the shape of a cube, in order to determine the net resistance between opposite corners, first draw the cube in two dimensions. (Try this at each step before continuing, so you can understand the lesson as it unfolds.)
There are three resistors leaving the initial vertex, and three resistors entering the final vertex. In between those six resistors, are six more resistors, each pair connected together on one end, and to two other resistors on the other end.
If every resistor has the same value, then (by symmetry), the voltage on the ends of the first three resistors must be the same. Similarly, the voltage on the ends of the last three resistors must be the same.
If two points in a circuit have the same voltage, then (for purposes of analysis) you can consider them to be shorted together. That short does not change the results, as there is no current flowing through that short.
With the bottom ends of the first three resistors shorted, and with the top ends of the last three resistors shorted, the circuit degrades into three resistors in parallel, in series with six more resistors in parallel, in series with three more resistors in parallel.
Three 1 KOhm resistors in parallel have a net resistance of 333 ohms. Six have a net resistance of 167 ohms. Two 333 ohm resistors and one 167 ohm resistor in series have a net resistance of 833 ohms, or 5/6 of 1 KOhms.
Note: This technique does not work if the resistors are not all the same value. In that case, you would need to solve 12 equations in 12 unknowns, looking at the partial currents in each branch.
Is it possible for a gate output to receive current from other sources?
Yes. You can use an open collector design, and you simply need a pull-up resistor to make it work. You can also use a tri-state design, and you simply need to make sure that only one gate is turned on at a time. These techniques are useful in bus design, where there is more than one sender, but only one is turned on at a time.
What is the difference between a positive limiter and a negative limiter?
The polarity at which it limits a waveform.
What is input impedance of fet amplifier?
Zin=Vds/Id [Vds=drain to source voltage ; Id = drain current]
How does quadrature amplitude modulation works?
QAM is a combination of phase modulation & amplitude modulation.
What is the meaning of signal ahead?
"Signal ahead" typically refers to a warning or indication that a signal, such as a traffic light or railway signal, is approaching. It alerts drivers or travelers to prepare for a change in conditions, such as stopping or adjusting their speed. This phrase is often used in transportation contexts to enhance safety and ensure that individuals are aware of upcoming signals that may require their attention.
How snubber circuit connected across igbt?
A snubber circuit is typically connected across an IGBT (Insulated Gate Bipolar Transistor) to protect it from voltage transients and reduce voltage spikes during switching events. It usually consists of a resistor and a capacitor in series (RC snubber) or a diode-capacitor combination for diode snubbing. The snubber absorbs excessive energy, minimizing the risk of damage to the IGBT and improving overall performance by smoothing out the voltage waveform. Proper design of the snubber is crucial to effectively dampen oscillations and ensure reliable operation.
