Tuesday, 23 April 2013
HOW TO IDENTIFY THE TYPE OF FEEDBACK IN OP-AMPS
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Let the input terminal to which source is connected is
considered as shunt
The terminal connected to ground at the input is considered
as series
The output
terminal from which output is taken is considered as voltage
The other end of
the load resistor is considered to be current
NOTE :
Naming the feedback is done from the output to input.
VOLTAGE-SERIES FEEDBACK OR SERIES-SHUNT FEEDBACK
STEP 1: identify the feedback resistor
STEP 2: The terminal connected to ground at the input is
considered as series
STEP 3: The output terminal from which output is taken is
considered as voltage
STEP 4: Name the feedback is considered from the output to
input
As the feedback resistor is connected from output voltage ( VOLTAGE
) to input connected to ground (SERIES)
So,this circuit is called voltage series feedback
How to convert the name VOLTAGE- SERIES to SERIES-SHUNT FEEDBACK
Rename voltage as shunt and interchange the
names as
VOLTAGE- SHUNT or SHUNT-SHUNT FEEDBACK
STEP 1: identify the feedback resistor
STEP 2: Let the input terminal to which source is connected
is considered as shunt
STEP 3: The output terminal from which output is taken is considered as voltage
STEP 3: The output terminal from which output is taken is considered as voltage
STEP 4: Name the feedback is considered from the output to
input
As the feedback resistor is connected from output voltage ( VOLTAGE
) to input (SHUNT)
So,this circuit is called voltage shunt feedback
How to convert the name VOLTAGE- SHUNT to SHUNT-SHUNT
FEEDBACK
Rename voltage as shunt and interchange the names
as
CURRENT-SERIES or SERIES-SERIES FEEDBACK
STEP 1: identify the feedback resistor
STEP 2: The terminal connected to ground at the input is
considered as series
STEP 3: The other end of the load resistor is considered to
be current
STEP 4: Name the feedback is considered from the output to
input
As the feedback resistor is connected from other end of the
load resistor ( CURRENT ) to input terminal connected to ground (SERIES)
So,this circuit is called current series feedback
How to convert the name CURRENT- SERIES to SERIES-SERIES
Rename current as series and interchange the
names as
CURRENT- SHUNT or SHUNT-SERIES FEEDBACK
STEP 1: identify the feedback resistor
STEP 2: Let the input terminal to which source is connected
is considered as shunt
STEP 3: The other end of the load resistor is considered to
be current
STEP 4: Name the feedback is considered from the output to
input
As the feedback resistor is connected from other end of the
load resistor ( CURRENT ) to the input terminal to which source is connected (
SHUNT )
So, this circuit is called current shunt feedback
How to convert the name CURRENT- SHUNT to SHUNT-SERIES
Rename current as series and interchange the names as
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9 Responses to “HOW TO IDENTIFY THE TYPE OF FEEDBACK IN OP-AMPS”
23 April 2013 at 08:57
useful
24 June 2013 at 15:15
really helpful thanks.
11 November 2015 at 09:00
Really helpful.. Thanks.
3 April 2016 at 13:52
THIS IS REALLY HELPFUL. THANKS A LOT.this post save me
5 August 2016 at 01:25
I dont get it...
5 August 2016 at 01:29
I dont get it...
2 December 2017 at 23:59
Crystal clear information!!! Thank u soo much...I feel so relaxed after going through the site
21 January 2018 at 00:39
Sooper...
26 March 2018 at 05:13
THANKS! Cleared this up perfectly!
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