Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)
Ask More Info Of  A Seminar Ask More Info Of A Project Post Reply  Follow us on Twitter
14-12-2012, 01:51 PM
Post: #1
OPAMP APPLICATIONS – ADDER, SUBTRACTOR & COMPARATOR CIRCUITS
OPAMP APPLICATIONS – ADDER, SUBTRACTOR & COMPARATOR CIRCUITS


.docx  OPAMP APPLICATIONS.docx (Size: 408.47 KB / Downloads: 46)

THEORY :

Adder :

Adder circuit is a Summing Amplifier. Op-amp can be used to design a circuit whose output is the sum of several input signals. Such a circuit is called a summing amplifier or a summer. Summing amplifier can be classified as inverting & non-inverting summer depending on the input applied to inverting & non-inverting terminals respectively. Fig shows an inverting summer with two inputs. Here the output will be the linear summation of input voltages. Here the feedback forces a virtual ground to exist at the inverting input . The output is equal to the negative weighted sum of the input voltages. The summing operation depends exclusively on the sum of the resistor ratios. Fig . shows the inverting configuration with three inputs Va, Vb, Vc depending on the relationship between the feedback resistor RF and the input resistors Ra ,Rb and Rc , the circuit can be used as either a summing amplifier, scaling amplifier, or averaging amplifier. By connecting more than one input voltages to the inverting input, the resulting circuit is the Adder.

Comparator :

A Comparator is a non-linear signal processor. It is an open loop mode application of Op-amp operated in saturation mode. Comparator compares a signal voltage at one input with a reference voltage at the other input. Here the Op-amp is operated in open loop mode and hence the input is ± Vsat. It is basically classified as inverting and non-inverting comparator. In a non inverting comparator Vin is given to +ve terminal and Vref to –ve terminal. When Vin < Vref, the output is –Vsat and when Vin > Vref, the output is + Vsat. In an inverting comparator input is given to the inverting terminal and referenceis given to the non inverting terminal. The comparator can be used as a zero crossing detector , window detector, time marker, phase meter.

Subtractor :

1. Connect the subtractor circuit as shown in fig. by connecting the appropriate resistors to 741 IC.
2. Switch on the trainer.
3. Apply dc voltages at each input terminals for V1 and V2 from the dc supply and check the output voltage Vo at the output terminal.
4. Tabulate the readings.
5. Compare the practical Vo with the theoretical output voltage Vo=(-Rf/R1)(V2-V1) value.

Comparator :

1. connect the comparator circuit as shown in fig.
2. Apply 1 KHz sine wave with 5 Vp-p at the inverting input terminal of 741 IC using a function generator.
3. Apply 3V dc voltage as reference voltage at the non-inverting terminal of 741 IC.
3. Connect channel -1 of CRO at the input terminals and channel-2 of CRO at the output terminals.
4. Observe the input sinusoidal signal in ch-1 and the corresponding output square wave in ch-2 of CRO.
5. Note the amplitude and timeperiods of Vin and Vo.
Rating OPAMP APPLICATIONS – ADDER, SUBTRACTOR & COMPARATOR CIRCUITS Options
Share OPAMP APPLICATIONS – ADDER, SUBTRACTOR & COMPARATOR CIRCUITS To Your Friends :- Seminar Topics Bookmark
Post Reply 

Marked Categories : adder using op, op amp adder subtractor circuit, adder and subtractor op amp, o pem as a subtractor, adder and subtractor circuit using ic 741, applications of op amp as adder subtractor averaging amplifier and adder subtractor, op amp 741 adder subtractor ppt, 741 op amp comparator circuit pdf, adder subtractor comparator ppt, adder and subtractor op amp circuit, op amp summing subtractor doc, subtractor by opamp, working of subtractor using ic 741, working of op amp as subtractor, adder subtractor circuit project report, op amp adder substractor pdf, projects on op amp as adder, project in pdf on op amp as adder, op amp as a subtractor project information,

[-]
Quick Reply
Message
Type your reply to this message here.


Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  ELECTRICAL CIRCUITS LABORATORY MANUAL project maker 0 59 13-06-2014 10:53 AM
Last Post: project maker
  Trigger Circuits for Thyristors seminar projects maker 0 75 19-05-2014 03:34 PM
Last Post: seminar projects maker
  UltracapacitorsM for Use in Power Quality and Distributed Resource Applications seminar projects maker 0 67 19-05-2014 12:28 PM
Last Post: seminar projects maker
  Ripple Carry Adder pdf seminar projects maker 0 92 14-05-2014 12:45 PM
Last Post: seminar projects maker
  Applications of Multirate Signal Processing Report seminar post 0 113 30-04-2014 11:38 AM
Last Post: seminar post
  A RF Frong-End CMOS Transceiver for 2GHz Dual-Band Applications pdf seminar projects maker 0 102 29-04-2014 04:29 PM
Last Post: seminar projects maker
  Sweep Frequency Response Analysis Transformer Applications seminar projects maker 0 122 29-04-2014 04:27 PM
Last Post: seminar projects maker
  Operational Amplifier Circuits seminar projects maker 0 99 22-03-2014 10:11 AM
Last Post: seminar projects maker
  Low-Power and Area-Efficient Carry Select Adder pdf project girl 1 601 17-01-2014 11:17 AM
Last Post: Guest
  Review of Electromagnetic Bandgap Technology and Applications pdf seminar projects maker 0 196 15-01-2014 04:35 PM
Last Post: seminar projects maker
This Page May Contain What is OPAMP APPLICATIONS – ADDER, SUBTRACTOR & COMPARATOR CIRCUITS And Latest Information/News About OPAMP APPLICATIONS – ADDER, SUBTRACTOR & COMPARATOR CIRCUITS,If Not ...Use Search to get more info about OPAMP APPLICATIONS – ADDER, SUBTRACTOR & COMPARATOR CIRCUITS Or Ask Here

Options: