It won't starts from 2^0*R, 2^1*R, 2^2*R.... It starts from 2^1R, 2^2R......2^n*R. If you observe the equation of DAC Analog value =K* Digital value. Vo= Vfl(2^-1*d1+2^-2*d2....2^-n*dn).
Resistor required in n binary weightage type resistor is not nr or 2r or 4 r ...it is 2 power n-1 R like as for 4 bit binary weighted converter n=4 so 2 power n-1 = 2 power 3 =8 resistor ...
Hello Krishna, Reference voltage can be either positive or negative.... if ref voltage is negative we will get a positive output else output will be negative...
No you multiple inputs can be given depending on the number of bits if 110 in binary then from msb make two input connected to -Vr and lsb 0 the 3rd input to ground to make 0 the current will be flowing from 1 1 input. Total current will be the sum of 1 1 input current. Now the total current is input to op amp which converts current to voltage. Thank you hope this will help many techies😊
is required to operate a solenoid valve using a microcontroller-based system. The solenoid valve has two opening positions A and B, the valve opens at position A at a voltage of 0.4125V (scaled) and at position B at a voltage of 2.0625V (scaled). Design a binary weighted DAC that can be used to perform this task. You cannot use a reference voltage higher than 5V. Solution???
Hello Munesh, digital value is actually binary weighted - consider 111 ie decimal 7- 1 × 2^2 + 1 × 2^1 + 1× 2^0, so amount of currents through these resistors are also binary scaled - let current through MSB resistor is 4mA, current through next resistor is 2mA and current through LSB resistor is half of current flow through resistor of the previous bit....
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I found it no were on youtube but i find it here..thanku mam
In several channels, this is explained....
Maam, you are very intelligent in electronic............
Thanku mam gland to have u and fit for teaching may God bless u with more knowledge and happiness
Perfect video in UA-cam ❤
Hii
I passed digital electronics because of u mam just one night batting .....
What do you mean batting 😂
@ 💀 yeah what ever you are thinking
@@mithileshvannela8366 can you guide me to the pass this exam like you
You gave me a reply for 3 years old comment 🙌🏻,may be your present working I think
Thanking u guys from bd... Such a relief that someone has put up a explanation for these topics..Vagwan apka vala kare:3
Your explanations are just awesome....just add subtitle plz for much easy.
Mam you are an awesome teacher.
Is really so accurate and now it's easy to get A/d and D/A Thank's
Yes, it is really accurate but not as R-2R ladder network DAC
simple and accurate explanation
Super mam..TQ
Hi
In output voltage formula we have to keep -vr instead of vr
In negative feedback of opamp the opamp phase shifts the output wrt to input supplied so
-Vr is given as input in phase shift it will be opposite +ve
great explantion
Good examplanation
Excellent
Tq
the MSB RESISTOR SHOULD HAVE A VALUE OF "R" NOT "2R"
resistance of lsb is 2^(n-1)R.
It won't starts from 2^0*R, 2^1*R, 2^2*R....
It starts from 2^1R, 2^2R......2^n*R.
If you observe the equation of DAC
Analog value =K* Digital value.
Vo= Vfl(2^-1*d1+2^-2*d2....2^-n*dn).
Thank you mam 🛐
Thanks mam..awesome explanation..
good explain
Very good
Thank u Mam... Keep it up n help us..
Thank u very much mam
I think you are mistaken. The MSB should be R , not 2R. So almost every calculation you do is not correct.
At least it's almost, not every. Take the positives. You go Mrs India
Don't judge a book by it's cover 😂😂just kidding
You explained very well.. 🌺🌺
thku mam .
your lessons helped a lot
sooo Thank you mam....
Thank you mam.
Mam in problem statement Vr is given ??? If not given then how to find it??
It will always be given
Thanks
Tnqu ma'am!!
Mam why you are leaving resistances connected to ground here but taking consideration while explaining r2r ladder dac
Helpful
thank u mam
its wrong formula
vo=Vr/2[b2/2+b1/2^2/bn/2^n]
LSB or MSB =1🤔🤔🤔
Thank u mam,u r great 👍👍
If 0, ground will be connected and those resistances need to be included know,as in R 2R ladder. Can any one clear my doubt?
Madem please take analog electronics classes... Plz madem
If the bit value is 0, i think this resistor will be floating, not connect to GND
Actually it is floating I think,for representation purpose they used ground
That input is connected to ground, it will not be floating....
Ur voice is so sweet...
the MSB RESISTOR SHOULD HAVE A VALUE OF "R" NOT "2R"
It's binary resistor bro...
You don't know shit bro
very helpful
Resistor required in n binary weightage type resistor is not nr or 2r or 4 r ...it is 2 power n-1 R like as for 4 bit binary weighted converter n=4 so 2 power n-1 = 2 power 3 =8 resistor ...
For 3bit=0011 but why you take 100 mam
resistance of lsb is 2^(n-1)R.
Why dont we consider the resistance connected to gnd while calculating the equivalent resistance as in case of R-2R ladder?
If you still have doubt on this topic go ckeckout this video it's way better
ua-cam.com/video/7-46fMfhXCQ/v-deo.html
@@SupremeTuber self promotion.
@@dm3248 it's nothing bad just giving viewers a option in case they still have doubt
@@SupremeTuber yeah i never said it's wrong but you said it's way better than this, so i don't agree with that..
@@dm3248 well technically everyone speaks in their own reference and according to me it really is way better, so again nothing bad
sircute
why we are considering -Vr as input
Hello Krishna, Reference voltage can be either positive or negative.... if ref voltage is negative we will get a positive output else output will be negative...
Thank you so much mam...Such a nice explanation🙂
Thank you mam
Why do u take reference voltage as negative??
So that output voltage is positive, you can take in the other way also....
Why do we take refrence voltage as -Vr
If you take Vr -ve, we will get positive output voltage else we will get a negative output voltage....
She connecting msb to LSB how
Y rad pen ka use na kre ap smg nhi aa rha h kya likha h
Pls elaborate the last formula how the a1 a2 a3 are taken?
For 110
MSB=1
Therefore in formula
a1=1 R=2Rf
a2=1. R=4Rf
a3=0
Therefore by formula
{1/2+1/4+0} Vr =3/4 Vr
Hello Mr. Reddy, I had analysed this circuit, you want you can refer my videos....
Write in bigger size so that it will be more visible. Rest is good 👍
Note also write
Does this mean that when doing this calculation we have to consider one input at a time and then add the individual outputs.
No you multiple inputs can be given depending on the number of bits if 110 in binary then from msb make two input connected to -Vr and lsb 0 the 3rd input to ground to make 0 the current will be flowing from 1 1 input. Total current will be the sum of 1 1 input current. Now the total current is input to op amp which converts current to voltage. Thank you hope this will help many techies😊
is required to operate a solenoid valve using a microcontroller-based system. The
solenoid valve has two opening positions A and B, the valve opens at position A at a voltage
of 0.4125V (scaled) and at position B at a voltage of 2.0625V (scaled). Design a binary
weighted DAC that can be used to perform this task. You cannot use a reference voltage
higher than 5V.
Solution???
kharab eng se hindi hi bol lo ...... or red marker dikh nai raha ...... baki sb thi a
mam R= Rf or R= 2Rf both the values are valied ???????????????????
Ok not good
Mam why you are leaving resistances connected to ground here but taking consideration while explaining r2r ladder dac can any one explain in comments
Mam can u plz tell why we have used power of 2 with registers in binary weighted register mthod
Hello Munesh, digital value is actually binary weighted - consider 111 ie decimal 7- 1 × 2^2 + 1 × 2^1 + 1× 2^0, so amount of currents through these resistors are also binary scaled - let current through MSB resistor is 4mA, current through next resistor is 2mA and current through LSB resistor is half of current flow through resistor of the previous bit....
Googd
Vout formula u got is wrong.. Im not getting exact correct answer by thar
Same here
Ya ur rgt
I have given an elaborate explanation for this, you may refer my videos....
Thanks Madam ur Explanation of digital elec is very beautiful it is much valuable.
Please speak in Hindi
Ma'am plz explain 4 bit binary weighed resistor
Binary Weighted Resistor DAC can u explain the output in current
Yes ofcourse....
lecture is not interesting like knowledge gate or like neso academy.very boring and hard to understand.
circute
Excellent
thanks
Thanks mam
thanks mam