12/11/12
SAMPLE AND HOLD CIRCUIT USING OP AMP 741 | MY CIRCUITS 9
Home
PROJECTS »
About Me
TUTORIALS »
Contact us
Privacy Policy
Disclaimer
ONLINE CALCULATORS »
Searching for sample hold circuit op 741?
1. Looking for Sample Hold circuit op 741?
w w w .InternetCorkBoard.com
SEARCH THIS BLOG
Top answers for Sample Hold circuit op 741
2. Searching for Sample Hold circuit op 741?
Search
w w w .Answ ered-Questions.com
Top answers for Sample Hold circuit op 741
3. Sample Hold circuit op 741 near you
w w w .Answ ered-Questions.com
Get local answers for Sample Hold circuit op 741
Chitika | Opt out?
JOIN WITH US
RSS
G+
FB
Twitter
Receive New Articles To Your Inbox
Saturday 11 August 2012
By
Submitting Your Email ID Below.
Enter your email here...
Submit
SAMPLE AND HOLD CIRCUIT USING OP
AMP 741
9:12 AM Posted by Tittu Thomas
POPULAR POSTS
Labels: tutorials
The sample and hold circuit, as its name implies, samples an input signal and holds on its last sampled
value until the input is sampled again.
SIMPLE INVERTER CIRCUIT
230V
SIMPLE IR REMOTE SWITCH
CIRCUIT
SIMPLE RF REMOTE SWITCH
CIRCUIT
230V LED DRIVER CIRCUIT
2
Like
0
Figure shows the Circuit Diagram of a SAMPLE AND HOLD Circuit using 741 OP AMP with an E-MOSFET. In
this circuit the E-MOSFET works as a switch that is controlled by the sample-and-hold control voltage Vs,
and the capacitor C serves as a storage element.
CIRCUIT OPERATION OF SAMPLE AND HOLD
RC COUPLED AMPLIFIER
The analog signal Vin to be sampled is applied to the drain, and sample and hold control voltage Vs is
0
applied to the gate of the E-MOSFET. During the Positive portion of Vs, the E-mosfet conducts and act as a
closed switch. This allows input voltage to charge capacitor C. In other words input voltage appears across
C and in turn at the output, as shown in figure below-
mycircuits9.blogspot.com/2012/08/sample-and-hold-circuit-using-op-amp-741.html
SIMPLE WATER TANK OVERFLOW ALARM
CIRCUIT
1/4
12/11/12
SAMPLE AND HOLD CIRCUIT USING OP AMP 741 | MY CIRCUITS 9
0
ZENER DIODE APPLICATIONS
WE WANT YOUR FACE TOO HERE!
Find us on Facebook
Mycircuits9
Like
314 people like Mycircuits9.
On the other hand, when Vs is zero the E-mosfet is off (Non conductive) and acts as an open switch. The
only discharge path for C is, therefore, through the operational amplifier (OP AMP). However, the input
resistance of the op amp voltage follower is also very high; hence the voltage across C is retained. The time
V ishnupriy a
Razeem
Boris
Zeinab M ohamed
Razama
M alik
N agaraja G M
Rajesh
A rjun
M uslim
Rahul
M uhammad
V ishnu
M att
A mr
periods Ts of the sample and hold control voltage Vs during which the voltage across the capacitor is equal
to the input voltage are called sample periods. The time period Th of Vs during which the voltage across the
capacitor is constant are called hold periods. The output of the OP-AMP is usually processed/observed
during hold periods. To obtain close approximation of the input wave form, the frequency of the sample and
hold control voltage must be significantly higher than that of the input. In critical applications a precision or
high speed op amp is helpful. If possible choose a low-leakage capacitor made of material such as teflon or
polyethylene.
F acebook social plugin
A significant reduction in size and improved performance can be achieved by using a specially designed
sample and hold IC such as the LF398. The sample and hold circuit is commonly used in digital interfacing
and communications such as analog to digital and pulse modulation systems.
TOTAL VISTORS
2 6 7 4 0 5
You may also like:-ZERO CROSSING DETECTOR USING OP AMP
7
Do you like this Article?
Like
Send
2 people like this.
Follow @m ycircuits9
FOLLOWERS
11 follow ers
Join this site
w ith Google Connect
Related Posts
Members (35) More »
Function
Generator
Working with
Blo...
PRECISION
RECTIFIERS
HALF WAVE
AND ...
OP AMP
COMPARATOR
TUTORIAL
OPTOCOUPLER
OR
OPTOISOLATOR
TUTORIA...
Voltage and
Current
Converter
Using...
Already a member? Sign in
Kindly Bookmark and Share it:
LABELS
tutorials
Get Latest Electronic Projects for FREE
projects
amplifier
Enter Your Email
Subscribe
▼ 2012 (141)
► December (1)
► November (9)
► September (1)
calculator
tools
simple circuits
mycircuits9.blogspot.com/2012/08/sample-and-hold-circuit-using-op-amp-741.html
BLOG ARCHIVE
▼ August (14)
SIMPLE
BATTERY
CHARGER
2/4
12/11/12
SAMPLE AND HOLD CIRCUIT USING OP AMP 741 | MY CIRCUITS 9
Searching for sample hold circuit op 741?
1. Looking for Sample Hold circuit op 741?
w w w .InternetCorkBoard.com
Top answers for Sample Hold circuit op 741
working
CIRCUIT
op amp
230V LED
DRIVER
CIRCUIT
circuit
alarm
2. Searching for Sample Hold circuit op 741?
w w w .Answ ered-Questions.com
Top answers for Sample Hold circuit op 741
theory
circuits
3. Sample Hold circuit op 741 near you
w w w .Answ ered-Questions.com
Get local answers for Sample Hold circuit op 741
oscillator
others
Chitika | Opt out?
multivibrator
simple
0 comments:
advantages
transistor
applications
Got Confused, comment here...................
Enter your comment...
AUDIO
AMPLIFIER
CIRCUIT
USING
LM386
SIMPLE ECG
(ELECTROCARDIOGRAPH)
CIRCUIT
SIMPLE RAMP
GENERATOR
CIRCUIT
USING 555
SAMPLE AND
HOLD
CIRCUIT
USING OP
AMP 741
PRECISION
RECTIFIERS
HALF WAVE
AND FULL
WAVE
OP AMP
COMPARATOR
TUTORIAL
Co mme nt a s : Google Account
Publish
Preview
Links to this post
Create a Link
ZERO
CROSSING
DETECTOR
USING OP
AMP
THE OP AMP
PEAK
DETECTOR
SWITCHED
CAPACITOR
FILTERS
TUTORIAL
SIMPLE
MULTITONE
SIREN
CIRCUIT
INSTRUMENTATION
AMPLIFIER
DIGITAL
THERMOMETER
CIRCUIT
► July (37)
► June (54)
► May (18)
► March (4)
► February (1)
► January (2)
► 2011 (1)
mycircuits9.blogspot.com/2012/08/sample-and-hold-circuit-using-op-amp-741.html
3/4
12/11/12
SAMPLE AND HOLD CIRCUIT USING OP AMP 741 | MY CIRCUITS 9
Searching for sample hold circuit op 741?
1. Looking for Sample Hold circuit op 741?
w w w .InternetCorkBoard.com
Top answers for Sample Hold circuit op 741
2. Searching for Sample Hold circuit op 741?
w w w .Answ ered-Questions.com
Top answers for Sample Hold circuit op 741
3. Sample Hold circuit op 741 near you
w w w .Answ ered-Questions.com
Get local answers for Sample Hold circuit op 741
Chitika | Opt out?
ABOUT THE AUTHOR
SUBSCRIBE TO US
Subscribe to our Facebook updates
RECENT POSTS
OPTOCOUPLER
OR
OPTOISOLATOR
TUTORIAL
Simple Water Level Indicator
I am TITTU THOMAS
Subscribe to our Twitter updates
SOLAR BATTERY CHARGER CIRCUIT WITH
Admin of MYCIRCUITS9,
OVER CHARGE PROTECTION
Now doing my B.Tech
Degree in Electronics
and
Subscribe to our Google Plus Page
Communication
Kerala, India. I like doing
Electronic
Projects,
TYPES
AND
CLASSIFICATION
OF
INTEGRATED CIRCUITS (IC)
Engineering. I am from
Subscribe to our RSS FEED updates
Designing Circuits,
Blogging, Chatting.......
MIC AND AUDIO AMPLIFIER CIRCUIT
SMOKE DETECTOR USING 555 TIMER
VOLTAGE TO FREQUENCY CONVERTER
9400
MY CIRCUITS 9 © 2012. All Rights Reserved | About | Contact
mycircuits9.blogspot.com/2012/08/sample-and-hold-circuit-using-op-amp-741.html
4/4