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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
monolithic integrated circuit
What is voltage drop in an electrical circuit?
When a current flow on a conductor , or load or resistor, some voltage will drop across that load or resistor.
AnswerA voltage drop is the potential difference appearing across individual components in a circuit, necessary to drive current through those components. The sum of the individual voltage drops around a series circuit will equal the supply voltage applied to that circuit.
What is internal gain of amplifier?
The internal gain of an amplifier is the gain or the amplification factor of the transistor used in it....................it is internal because it is fixed for transistors while manufacturing..................
What is meant by standard load in digital electronics?
One standard load is the load of a typical input of a specified logic family. This is more relevant with bipolar logic families (e.g. RTL, DTL, TTL, ECL, I2L) than MOS logic families (e.g. NMOS, CMOS). Outputs of devices in these logic families are then rated by the number of standard loads they can drive. However when crossing between logic families (e.g. LS TTL to S TTL) the concept of standard loads is less useful and actual high/low state input current loading and output drive capability calculations should usually be made.
How do you identify for a shorted and an a opened transistor?
This can be quickly done with a multimeter in ohms or diode scale. Test EB & CB junctions as you would ordinary diodes and test CE for leakage both ways (there should be none).
What is function of pulse switch in digital training system?
what is the function of data switchesof digital training system
Why is the shunt field resistance greater than the series field resistance?
In case of series winding total line current is flow through it.line current is very very high.so,to minimize the drop the winding made as low turns and low gauge.hence the resistance is low.in case of shunt winding high resistance winding is used otherwise short circuit the parallel winding.for that winding is made as heavy turns and heavy gauge.
Analog Signal. If I helped you out make sure to check out my Youtube. GomezManor
How do compute the reactance in an inductive circuit?
Inductive reactance, XL, in ohms, is given by:
XL = 2 pi f L
where:
f = frequency (Hz)
L = inductance (H)
When current flows through a resistance is heat produced?
Yes, heat energy is produced by the electrons;however small it may be,actually if we consider a resistance then it is an hindered to the flow of electrons,as a result of which the electrons collide with the particles of wire resulting in loss of energy in the form of heat.the equation of heat generated is:
H=(I^2 *R*t)
where-
H=heat produced in joules
R=resistance of the material in ohm
t=time of current flow in seconds
Why we you use center tapping in rectifier?
because we can get two different value at outpit.if we cosider tree point at secondery side of rectifier of 100volt that is A,B and C than we can get 50 vol bitween A and C.and we can get 100 volt bitween A and B.so no need to use two different value rectifier of 50 and 100 valt
Because many electronics, like power supplies, have internal energy storage in the form of capacitors. If you were to short the terminals, you would be shorting out the internal capacitors and thus creating a potentially hazardous situation. "Completing the circuit by internal resistance" allows the energy stored in the internal capacitors to bleed off slowly because the internal resistance is larger than a short.
What is forward breakover voltage?
forward-breakover voltage - the voltage at which a device enters the forward-blocking region.
The voltage at which the SCR enters the forward-condition region. The value of Vbr(f) is maximum when (Ig=current in gate) Ig=0 and is designate Vbr(f0). When the gate current is increased, Vbr(f) decrease and is designated Vbr(f1), Vbr(f2), and so on, for increasing steps in gate current (Ig1, Ig2, and so on).
How AC analysis differs from DC analysis?
You need to keep track of phase angle in AC, but not in DC.
Why voltage divider biasing circuit is the widely used biasing?
In a voltage -divider circuit method for biasing a transistor , we have two resistors R1 and R2 a DC supply voltage VCC and other components like collector resistor , emitter resistor are also present.
here biasing is done by the help of voltage drop across the resistors
to understand the reason behind the extensive usage of voltage - divider method we need to know about the term stability.
Stability factor of a transistor is defined as the ratio of amount of change in collector current to the amount of change in the same collector current with the base open(leakage current due to minority charge carriers)
lesser the stability factor ------ that type of biasing is more desired
the stability factor for voltage divider method is nearly equal to one.
