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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
An AC has a peak value of 12 amps what is the average value of the current?
i think average value of current in ac current is zero.
Limitation of operating condition in p-n junction?
the p-n junction diode will perform satisfactorily only if it is operated within certain limiting values or conditions.The are :-
1. Maximum forward current : it is the highest instantaneous current under forward bias.
2.Peak inverse voltage:
3.maximum power rating:it is the maximum power that can be dissipated at the junction without damaging it.
Well you can say that the frequency of DC is constant or not?
Yes it is constant at Zero Frequency.
No, DC or Direct Current only means that the current only goes one direction, but it can have a frequency. You can have a square wave, sawtooth wave or sine wave that never goes from positive to negative or negative to positive and it would be a direct current with a frequency.
What is the rarest Sony Receiver?
STEREO RECEIVER 6060F- SOLID STATE IS THE RAREST SONY RECEIVER. ALSO, IT KNOWN AS THE FIRST SOLID STATE STEREO RECEIVER EVER MADE BY SONY.
THE ORIGINAL STEREO RECEIVER (STR) 6060F-SOLID STATE HAS TWO VERSION- THE STR 6060F AND STR 6060FW. THE 6060F IS RARER THAN THE 6060FW. THE PRICE OF THE 6060FW COULD BE USD 200 - USD 600.
THE STEREO 6060F- SOLID STATE ITSELF HAS TWO MODEL-ONE FINISHED WITH WOODEN CABINET ON BOTH SIDES (USD300-USD1000) AND THE OTHER ONE IS FINISHED WITH METAL CABINET-THIS IS THE HARDEST TO FIND- IT COULD BE USD20,000.00 TO USD 25,000.00 OR EVEN MORE IF YOU FOUND THE RIGHT AVENUE TO SALE.
How does a 1 farad capacitor work?
Answer
The easiest way is to connect it directly to the battery. Make sure the polarity matches up. (-ve to -ve, and +ve to +ve). Because it is 1F, it will take some time to charge. (probably a minute or two.)
In that way, the capacitor will charge to whatever the voltage of the battery. But won't be fully charged,
What does Ohm's law imply will happen when electrons are pushed through a circuit with great force?
more power
What are sequential logic circuits?
Sequential Logic circuits are a type of logic circuits in which its output depends on the current and last input (memory).
a digital circuits that contain filp-flop is called as sequential ckt because its output at any time depend not only on its current input but also past sequence memory of past event.
List and describe the two main electric modalities or current used in cosmetology?
Galvanic- a constant and direct current, having a positive and negative pole and produces chemical changes when passing through the tissues and fluids of the body
Telsa High Frequency current- heat producing current with a high rate of oscillation or vibration
Is a digital watch considered a computer?
Yes, it`s a type of computer . Because basically computer does what it is programmed to do so does the watch . It ticks systematically . You just can`t interrupt it`s programming it just keeps on ticking in the form of 1`s and 0`s till whole 24 hours are completed and then it starts all over again. I personally think that it resembles a computer.
What is the FLA at 230 volts with nameplate amps of 20 and voltage of 230?
If the nameplate states 20 amps then that is the full load amperage when the motor is running. The start up current on the motor could reach 300% of the FLA depending on the type of motor and the load that is connected to the motor.
If you ground the flow of current like the last part of your question states you will not have a complete circuit as the circuit will open on a short circuit. To make a complete circuit operate you need a power source, an overload device to protect the conductors of the circuit, conductors to carry the current and a load across the power source which causes the current to flow in the circuit.
Leave any one of these things out and you will not have a complete circuit.
Which communications technique combines digital and analog technology to transmit data?
the digital carrier loop system
What electronic function made the transistor famous?
The importance of the Transistor was that it could amplify an electrical signal.
It was thus an analog of the vacuum tube devices, and could take advantage of the circuit history and applications that had built up over the preceding 50 years.
Is ic CA3140 and ic CA3130 are same?
The 3130 is an all MOS design whereas the 3140 is MOS input and bipolar output giving it a much better output drive. The 3140 is preferred in most applications.
What is the significance of hybrid model of a transistor?
Use of h - parameters to describe a transistor have the following advantages.
1. h - parameters are real numbers up to radio frequencies .
2. They are easy to measure
3. They can be determined from the transistor static characteristics curves.
4. They are convenient to use in circuit analysis and design.
5. Easily convert able from one configuration to other.
How is an transistor used as a amplifier?
Voltage is applied between the collector and emitter. A signal is applied between the base and emitter. The input signal will control how much the transistor turns on and the larger current flowing across the Collector/Emitter will be the same, but larger, than the input. Therefore amplified.
To keep the transistor switched on and to prevent the input signal switching it off, the transistor has to be biased on. This is usually done with a network of resistors on the base, raising the voltage to keep it conducting.
Is a semiconductor a type of chemical?
Everything that exists in the world except for a light ray or an electrical discharge such as lightening is a chemical! A semiconductor is a type of chemical. It is made from elements with valences of 3, 4, or 5.
What are the factors on which the power handling capacity of a waveguide depends?
the resistance of the inside layer
silver is good
the amount of radiating surface
bigger is better
Which is better Compression load cell or double ended shear beam load cell?
Dear actually it depend on its application. Where do you want to use them..
Compression Load Cell is considered as one of the best and long performance load cell.
and Double Ended shear beam load cell is widely known for its smooth operations.
It will take slightly less than one second (0.92 seconds) to charge a 1000uF capacitor to 12 volts through a 1000 ohm resistor if your power source is 20 volts.
The time constant of a 1000uF capacitor in series with a 1000 Ohm resistor is 1 second. (1x10-3 Farads times 1x10+3 Ohms = 1 second) It takes 1 time constant to reach 63% of a step change, 2 time constants to reach 86% of step change, and so forth using the equation VT = V0 (1 - e (-T/RC)). See notes below
12 is 60% of 20, so it will take about 0.92 seconds for the capacitor to reach 12 volts. In two seconds the capacitor will reach about 17 volts. In five seconds, five time constants, the capacitor will be considered to be fully charged, 99.3%, to 20 volts.
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Notes:
VT is voltage after a given number of seconds. V0 is the total initial voltage, in this case, 20 volts. -T/RC is the negative number of time constants for the exponential equation e-TC, which a charging capacitor exhibits. (More specifically, e-TC is the proportion of voltage across the resistor, while 1 - e-TC is the proportion of voltage across the capacitor.)
This equation is based on the fundamental equation of a capacitor...
dv/dt = i/c
... which states that the slope of the voltage is proportional to current and inversely proportional to capacitance. Plug this into an initial state differential equation, for the case of charging an initially discharged capacitor through a resistor, and you get
VT = V0 (1 - e (-T/RC))
(Derivation requires calculus, and that seems a little bit out of scope for this question.)
