In digital electronics, an asynchronous circuit, clockless, or self-timed circuit, is a sequential digital logic circuit which is not governed by a clock circuit or global clock signal. Instead it often uses signals that indicate completion of instructions and operations, specified by simple data transfer protocols. This type of circuit is contrasted with synchronous circuits, in which changes to the signal values in the circuit are triggered by repetitive pulses called a clock signal. Most digital devices today use synchronous circuits. However asynchronous circuits have the potential to be faster, and may also have advantages in lower power consumption, lower electromagnetic interference, and better modularity in large systems. Asynchronous circuits are an active area of research in digital logic design.
I am finding difficulty in understanding the sequence transition graph
My Book has given solution like this
Question : I have marked red circle in the above table. ...book has given E but I think it should be F ...What is correct here E or F ?
Here is the state diagram given in the book
Construct the circuit above using the block shown below.
The torque was gradually increased in small steps until the load torque reached the rated torque. At each step the torque, current speed, voltage and power factor was measured and the result record in Table (1).
Tn = Rated torque = 1 Nm...
What is better to feed a 500w asynchronous motor, an asynchronous or synchronous aerogenerator of 1kw? Why is a asynchronous/synchronous aereogenerator better in this case? Thanks you
Homework Statement
[/B]Y is output of rightmost flip flop. Q
Homework Equations
Drawing Timing Diagram. F(o/p) = F(clock)/(number of stages in output)
The Attempt at a Solution
The last flip flop has positive triggering clock. The moment Flip Flop output becomes 110X with MSB being rightmost...
Hi,
In an AC 3-phase induction motor (i.e. asynchronous motor) rotating magnetic field is produced by the stator and in this case rotor consists of simple cage having metallic bars or with coils wound around the rotor. The rotating magnetic field magnetizes the rotor and attracts it. As the...
I want to learn web programming with Java. I'm using eclipse neon with tomcat 8.5.13. My question is do these tools support asynchronous programming and server push technologies or should I use other tools?
Thanks
I've spent 10+ hours on trying to solve this and can't get it to work!
In short, I have a method
private async void LoadAndSavePage(object source, ElapsedEventArgs e)
{
// ...
}
which is being called every 1 second when the Windows Service that contains...
I recently learned about C#.NET's Parallel.ForEach function and it made me think that this is the new hammer I have that will make everything look like a nail. Under the covers, the parallel foreach figures out how to use the optimal number of threads (based on your machines CPUs and cores) to...
Hi...
Need help understanding 1MW, 6kV, 1600 RPM,Cage Rotor Asynchronous Motor, 3 Phase, 4 Poles.
I have the basic understanding of all ratings but have received very low price for this motor but when i searched on the internet it looked huge and had very high price as compared to what i have...
Is it possible to produce an entangled photon pair and be able to delay the reception times by introducing something like a fiber bragg grating which has multiple indices of refraction which propagate wavelengths at different frequencies? Or will, because of their entangled state, do some...
Let's say we have small hydropower plant which can operate in on-grid and in islanded mode too.
I understand a principles of frequency and active power control in a case we have synchronous generator, but what would be diff in a case of Asynchronous generator? How do we controll frequency in a...
Homework Statement
number of pole pairs p =2
line frequency f=50hz
number of rotations n=1250 1/min
Homework Equations
The Attempt at a Solution
question is number of rotations of the rotary magnetic field (1/min units)
the slip of the machine(s)
the frequency of the...
hello guys,
Its my first question here i hope i will have enough help i am the newbie here but i like this website already :)
my question is plot diagram of a 3phase voltage inverter for asynchronous motor driving. i tried to find it but couldnt. thank you from now :)
I have been tought several times that if an asynchronous induction motor is overloaded, so that the rotor speed goes below where the maximum torque point is, the motor will become unstable, and simply stall, even if you unload it.
Why does it do that?
fx. here...
One of the characteristics of full voltage starting (DOL) of an asynchronous induction motor is that full load current is exceeded quite significantly when the motor is started in this way.
So what is happening is that when line voltage is applied, the difference in synchronous and rotor...
Homework Statement
Design a sequential circuit, a modulo 9 counter that uses T-architecture. The counter content should be diplayed on a seven segment display and by a set of LEDs. Basically, I have to make a synchronous counter and a asynchronous reset using T FF's. We only have JK FF's...
So I was reading about asynchronous motors, and it seems the motor works better when the resistance of the rotor is smaller. This is fairly obvious, because the smaller the resistance, the bigger the inductive currents and therefore more mechanical force is applied on the rotor, thus its doing...
[PLAIN]http://img30.imageshack.us/img30/3306/counterty.jpg
Is this an asynchronous down counter, or is it nonsense? (Assuming all J and K inputs are connected high)
Trivial question, I know :-)
I had a lab and I wrote they are asynchronous, so the clock input matters, but I am starting to doubt if I did it properly :confused:...what is the effect for both suppose to be simultaneously or independently?
Thanks.
Suppose you design the digital circuit with D-flops and need to deal with asynchronous signals. Typical logic is receiving the async signal with a D flop followed by another D flop to deal with metastability. But how does double flopping benefit against the metastability ?
The first flop gets...
If we have a magnetic field and a ferromagnetic material subjected to this field, the body will rotate until its magnetic axis is aligned with that of the field..
My question is: In asynchronous 3-phase motor, we have a rotating field.. so why we need to make a short circuited rotor and we...
Hi everyone
I built a 4 bit asynchronous counter:
][/URL]
, the sequence is
1,2,3,4 right up to F and then 0,1,2,3...
My question is why doesn't the up counter start with 0...can someone explain it to me.Is this the correct sequence for a asynchrbous up counter.
Thank you &...
Homework Statement
guys i have given following question
"Brief out how you realize a 4 bit asynchronous up counter using flip flops."
my english is not good so please explain this question to me (in simple)
Homework Equations
The Attempt at a Solution
Hi there, I am working my way through some past exam papers and am stuck on this question, the answer that was given to me with the past exam was wrong so I have no reference, I cannot find anywhere on the net or in books the type of cct I am trying to design.
In previous parts of the...
Hello everyone,
I am using an external flip-flop chip to synchronize an external asynchronous input into a microcontroller. So, what I am wondering about is how to provide a clock into the FF chip... it has to run at the same rate as the system clock of the microcontroller. Is there a way to...