Working Principle, Pulse, Circuit Diagram, Applications | Operational amplifier
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
The circuits which are used to add a d.c. level as per the requirement, to the a.c. output are called as clamper circuits. Sometimes such circuits are also called as d.c. restorer circuits.
Working Principle, Pulse, Circuit Diagram | Operational amplifier
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
The circuits which are used to clip off the unwanted portions of the input voltage above or below certain levels, so as to produce limited required output are called limiting circuits.
Working Principle, Pulse, Circuit Diagram, Amplitude and Frequency Calculations, Solved Example Problems | Operational amplifier
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
We have seen that, the output of integrator is a triangular wave if its input is a square wave. This means that a triangular wave generator can be formed by simply connecting an integrator to the square wave generator as shown in the Fig. 3.20.1.
Working Principle, Circuit Diagram, Advantages, Design, Solved Example Problems | Operational amplifier
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
Generally in an oscillator, amplifier stage introduces 180° phase shift and feedback network introduces additional 180° phase shift, to obtain a phase shift of 3609 (2TI radians) around a loop. This is required condition for any oscillator.
Working Principle, Pulse, Circuit Diagram, Advantages, Disadvantage, Design, Solved Example Problems | Operational amplifier
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
The sine wave is certainly one of the most fundamental waveforms. A variety of circuits and techniques have been developed for the generation of sine waves. The conventional sine wave oscillator circuits use phase shifting techniques that usually employ.
Working Principle, Pulse, Circuit Diagram, Solved Example Problems | Operational amplifier
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
In this section we are going to study astable multivibrator operation using op-amp. Fig. 3.15.1 shows astable multivibrator circuit using op-amp. It looks like a comparator with Hysteresis (Schmitt trigger), except that the input voltage is replaced by a capacitor.
Op-amp
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
There are three types of multivibrator circuits in use, namely, a) Bistable multivibrator b) Monostable multivibrator c) Astable multivibrator Let us see the basic concept behind the operation of these three types of multivibrators.
Working Principle, Pulse, Circuit Diagram
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
There are three types of multivibrator circuits in use, namely, a) Bistable multivibrator b) Monostable multivibrator c) Astable multivibrator Let us see the basic concept behind the operation of these three types of multivibrators.
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
When two inputs are applied to the open loop op-amp then it compares the two inputs. Depending upon the comparison, it produces output voltage which is either positive saturation voltage (+ Vsat) or negative saturation voltage (- Vsat).
Classification, Working Principle, Circuit Diagram | Operational amplifier
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
As mentioned earlier, this filter is also called band stop filter or band reject filter. The action of this filter is exactly opposite to the band pass filter. This filter has two pass bands and one stop band. A band of frequencies is attenuated by this filter, hence the name band elimination filter.
Working Principle, Circuit Diagram, Solved Example Problems | Operational amplifier
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
Thus, the pass band is between the two cut-off frequencies fH and fL where fH > fL. Any frequency outside this band gets attenuated.
Operational amplifier
Subject and UNIT: Linear Integrated Circuits: Unit III: Applications of Op-amp
This filter the also can be realised by interchanging positions of resistors and capacitors in a second order low pass Butterworth filter.