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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 are the Difference between dc motor and dc generator?
a motor Will do work by consuming power a generator is just the opposite
well if you doubled the coils it would be pie times the amount of voltage in the current squared
yes yesyes you can i just dont know how yet but i know people that have!!!
What is the Difference between electronic and digital switching?
A chopper to chop DC into AC is an electronic switching. Digital is data bits or machine language whereby a processor can make decisions
How do I reduce 2000 mA or 2 Amps with 5V down to 20 mA with 5V?
assuming 5v steady the 2 amps can be virtual zero by reducing the load present
well yes and no yes it Will represents letter but as a function of an ASCII code like digital 41 Will represents the letter A
How do you amplify a square signal?
To easily do that all you need is a higher voltage level or the level that you desire . square waves usually are states of [1] or rail voltage and on[0] saturation voltage. to linearly amplify these square waves you will need a hi band pass amplifier . Possibly 50megahz or so
chopper use a ststeing perpose.....
dc means direct current that is low voltage
Viva questions on Carey foster bridge?
we can measure the resistance of the given wire using the carey foster bridge /
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What are the Features of stepper motor?
it is a mechanical device whereby signal will move a motor shaft degrees
What is Cam Actuated Drill Ahead Tool?
The CADA allows you to jet in surface pipe and drill out without making an additional trip out of the hole. The 36" relies on skin tension to stay in place, and after observation from the ROV the CADA will release the BHA and allow you to drill out the next section of casing while all returns are coming up through the pipe. Low fracture gradients in surface section don't allow returns on the backside of pipe.
What is the limitation of digital voltmeter?
The main limitation of a digital voltmeter is the resolution, analog voltmeters have a scale with divisions, and the user can read between these if the pointer does not fall on a specific division, digital voltmeters on the other hand are only able to display a finite number of values, although to be fair the resolution on lower ranges can be very small and is usually more than adequate. They also require batteries to work and from my experience, arent quite as well built as the good old AVO's how is it possible to view a meter when to read it you must directly position your eyes dead center and interpolate the thickness of a pointer. Lets not mention loading of an analog meter on the circuit itself. There are some draw back to digital meter like monotonic of the LSB but on a 7 digit readout it is not demoralizing I can read 1 mv on digital meter on an analog meter is mission impossible old timer.
What are the requirements to be a scientist?
A: You have to have thinking brain as opposed to education. I have known many educated idiots in my time thank you
draw a logic circuit of the clocked SR flip-flop using NOR gate
Although the evolution of the PLL began in the early 1930s but its cost outweighted its advantage in the beginning. Today the PLL is even available as a single package, typical examples of which are the Signetic's SE/NE series such as 560, 561, 562, 564, 565 and 567. They only differ in operating frequency range, power requirements, and frequency and bandwidth (BW) adjustment ranges. SE/NE 565 is the most widely employed IC of the series. The device is available as a 14-pin DIP package and as a 10-pin metal can package. Its important electrical characteristics are given below:
PLL PIN IDENTIFICATION
Characteristics of SE/NE 565 PLL IC- Operating frequency range : 0.001 Hz to 500 kHz.
- Operating voltage range : ± 6 to ± 12 V.
- Input impedance : 10 k Q typically.
- Output sink current :1mA typically.
- Output source current : 10 m A typically.
- Drift in VCO centre frequency with temperature : 300 ppm/ °C typically.
- Drift in VCO centre frequency with supply voltage : 1.5 %/V maximum.
- Input level required for tracking : 10 mVrms minimum to 3 V peak-to-peak maximum.
- Bandwidth adjustment range : < ± 1 to > ± 60 %.
NE-SE 565 IC
The block diagram and connection diagram of the SE/NE 565 IC is shown in figure. As shown in the figure, the PLL system consists of a phase detector or comparator (PC), a voltage-controlled oscillator (VCO), an amplifier and R-C combination forming low-pass filter circuit. The input signals are fed to the phase detector through pins 2 and 3 in differential mode. The input signals can be direct-coupled provided that the dc level at these two pins is made same and dc resistances seen from pins 2 and 3 are equal. By shorting pins 4 and 5 output of VCO is supplied back to the phase comparator (PC). The output of PC is ijiternally connected to amplifier, the output of which is available at pins 6 and 7 through a resistor of 3.6 k Q connected internally. A capacitor C2 connected between pins 7 and 10 forms a low-pass filter with 3.6 k Q resistor. The filter capacitor C2 should be large enough so as to eliminate the variations in demodulated output and stabilize the VCO frequency. Voltage available at pin 7 is connected internally to VCO as a control signal. At pin 6 a reference voltage nominally equal to voltage at pin 7 is available allowing both the differential stages to be biased. Pins 1 and 10 are supply pins.
The centre frequency of the PLL is determined by the free-running frequency of the VCO which is given as
Fout = 1.2/4R1C1 Hertz
where R1 and C1 are external resistor and capacitor connected to pins 8 and 9 respectively, as illustrated in figure. The free-running frequency fout of the VCO is adjusted, externally with Rt and C1, to be at the centre of the input frequency range. Resistor R1 must have a value between 2 and 20 kilo ohm. Capacitor C1 may have any value.
The 565 PLL can lock to and track an input signal typically ± 60 % bandwidth with respect to fout as the centre frequency. The lock-range of PLL is given as
fL = ± 8fOUT / V Hertz
where fout is free-running frequency of VCO in Hz and V = (+ V) - (- V) and capture range is given as
fC = ± [fL / 2∏ (3.6) (10)3 C2]1/2
The lock range usually increases with an increase in input voltage but falls with an increase in supply voltages.
What is the max load of 500 kva DG?
I=Kva*1000/v*1.732 =500*1000/415*1.732 =500,000/718.78 =695.62 Amps. So max.load of 500kva DG is 695.62 Amps
AISC stands for application specific integrated circuit. it's function is determined during it's design and manufacture, it is not programmed.
RF amplifier of an AM receiver is normally biased in class a class b class c?
class C because Class C also provides better signal,rejects unwanted signal.
class c
