State the condition for RC differentiator. Draw the output waveform of RC integrator for square wave input.

1 Answer

Answer :

Condition for RC differentiator: If the time duration T of the input waveform is comparable with the RC time constant (product of R and C) then the output waveform of the differentiator gets distorted. Hence for proper differentiator the condition is as follows:

T >>RC

image

Related questions

Description : Compare RC integrator with RC differentiator

Last Answer : Compare RC integrator with RC differentiator

Description : Compare Integrator and differentiator.

Last Answer : Sr. No. Integrator Differentiator 1 A circuit that gives an output voltage directly proportional to the integral of its input is known as an integrating circuit. A circuit that gives an output voltage directly ... is a low pass filter. It is a high pass filter. 5

Description : Draw RC differentiator circuit.

Last Answer : RC differentiator circuit :

Description : Draw the circuit diagram of shunt capacitor filter along with full wave rectifier. Draw the waveform of full wave rectifier output and shunt capacitor filter output.

Last Answer : Fig: Shunt capacitor filter along with full wave rectifier Fig: Waveform of full wave rectifier output and shunt capacitor filter output.

Description : With the help of circuit diagram and waveforms, explain working of RC differentiator.

Last Answer : Fig: RC differentiating circuit Figure shows a RC differential circuit. It is also known as high pass filter. The reactance of a capacitor decreases with increasing frequency. The higher ... i.e. the output signal is directly proportional to the derivative of the input signal.  

Description : Draw & describe working of bridge rectifier with its input output waveforms

Last Answer : Four diodes are used. a)In positive half cycle Diodes D1 & D3 becomes forward biased they will conduct & current flows at that time D2 and D4 are reverse biased they will not ... at that time D1 and D3 are reverse biased they will not conduct. we get full cycle rectification.

Description : Draw and describe working of series biased clipper with input output waveforms. 

Last Answer : Biased series positive clipper: Clipping of the signal takes place as soon as the input signal goes positive. If we want to change/adjust the clipping level of AC voltage, then external biasing voltage must be ... voltage must be used. The figure given below shows a biased (series) clipper.    

Description : Draw and describe circuit diagram of centre tapped rectifier with LC filter along with its input and output waveforms.

Last Answer : Explanation: A centre- tap full wave rectifier drive produces the rectified voltage and it drives the LC filter. We know that the series inductor filter is preferred for low values of load resistance ( ... load RL. The output voltage waveforms are similar to that as shown in figure above.  

Description : increases the steady state accuracy. (a) Integrator (b) Differentiator (c) Phase lead compensator (d) Phase lag compensator Ans:A 10.As a result of introduction of negative feedback which of the following will not decrease ? (a) Band width (b) Overall gain (c) Distortion (d) Instability

Last Answer : Ans: A

Description : With help of circuit diagram and waveform, explain working of positive series clipper.

Last Answer : Series Clipper (Positive):-   Working: For positive cycle the diode D is reverse biased. Hence there is no voltage across the load RL While for negative half wave, the diode D is forward biased. Hence ... positive cycle of the input voltage gets clipped off. Input & o/p wave form:-   

Description : With help of circuit diagram and waveform, explain working of CLC or π- filter.

Last Answer : Circuit diagram CLC or Π filter:   Working : It consist of a filter capacitor C1 connected across the rectifier o/p , a choke L is series and another filter capacitor C2 connected across the load. ... to block. Therefore, only d.c component appears across the load and that is what we desire.  

Description : With help of circuit diagram and waveform, explain shunt capacitor filter.

Last Answer : Circuit diagram and Waveform: OR Explanation: A filter circuit is one which removes the ac component present in the rectified output and allows the dc component to reach the ... which allows ac components. The remaining dc components present in the signal are collected at the output. 

Description : Describe working of negative clamper circuit with neat diagram and waveform.

Last Answer : Working: In the first positive half cycle the capacitor will charge through the forward biased diode to peak voltage Vm as shown in circuit. Charging takes place very quickly as the ... reverse biased and stop conducting. Negative clamper adds a negative DC shift as shown in waveform.

Description : What is the difference between an RC and an RL differentiator in terms of where the output is developed? is developed?

Last Answer : . In an RC circuit the output is taken across the resistor. In the RL circuit the output is taken across the inductor.

Description : Draw and describe working of full wave rectifier using centre tapped transformer.

Last Answer : Full wave Rectifier with Center tapped transformer(FWR): In full wave rectification, the rectifier conducts in both the cycles as two diodes are connected. Circuit diagram: Operation: 1. In ... both half-cycles of input AC voltage. Therefore DC is obtained across the load RL.

Description : Draw circuit diagram and waveforms for centre-tap full wave rectifier.

Last Answer : Circuit Diagram:    

Description : Define filter. State its types. Draw any one filter with input and output waveform.

Last Answer : Defination : Filter is a circuit which remove or filtered out the AC component (ripple) Types of filter 1. Shunt Capacitor filter (C filter) 2. Series Inductor filter (L filter) 3. LC filter 4. filter (CLC filter) Shunt Capacitor filter (C filter) OR Waveforms:

Description : Draw the circuit diagram of bridge rectifier with π filter. Draw its input and output waveform. 

Last Answer : Circuit diagram of bridge rectifier with π filter : Input and output waveform:

Description : Explain full wave bridged rectifier with the help of circuit diagram and input output waveform.

Last Answer : 1. In positive half cycle (0 to Π): The end A of the secondary winding becomes positive and end B negative. This makes diode D1 and D4 forward biased while diode D2 and D3 are reverse biased. These two diodes will ... D2 and D3 when it is conducting is as follows.  B - D2 - RL - D3 - A 

Description : The output voltage waveform of a three-phase square-wave inverter contains  (A) only even harmonics (B) both odd and even harmonic (C) only odd harmonics (D) only triple harmonics

Last Answer : C

Description : Draw the star and delta connection. State any one conversion formula.

Last Answer : star and delta connection

Description : Draw the characteristics of tunnel diode, showing operating regions. State two applications of tunnel diode.

Last Answer : Applications: One of the important application of a tunnel diode is in high speed computers where the switching times in the order of nanoseconds or picoseconds are desirable. A tunnel diode can be ... In digital networks. 2. As a high speed switch. 3. As a high frequency oscillator.

Description : Draw symbol and state one application of zener diode and LED.

Last Answer : Diagram: Application of Zener diode:  It is used as voltage regulator. Used in protection circuits for MOSFET. Used in pulse amplifier. Used in clipping circuits. ... alarm systems 7-segment, 16- segment and dot matrix displays Indicating power ON/OFF conditions

Description : Draw construction of Schottky diode and state it’s four applications.

Last Answer : Applications :- 1. RF mixer and detector diode: 2. Power rectifier 3. Voltage clamping 4. Stand alone photovoltaic systems in order to prevent batteries from discharging purpose for the solar panels at night 5. Rectifiers in power supplies.

Description : Draw π-filter and state its working.

Last Answer : Circuit Diagram:   Working : It consists of a filter capacitor C1 connected across the rectifier output, a choke L is series and another filter capacitor C2 connected across the load RL. The ... which the choke has failed to block. Therefore, only d.c component appears across the load. 

Description : State the necessity of wave-shaping circuit.

Last Answer : 1. To limit the voltage level of the waveform to some present value. 2. To shift the waveform to a particular voltage level. 3. To generate one wave from the other. 4. To cut the negative and positive portions of the waveform.

Description : Describe the working of PN junction diode with neat sketch under forward biased condition.

Last Answer : If the p-region (anode) is connected to the positive terminal of the external DC source and nside (cathode) is connected to the negative terminal of the DC source then the biasing ... The large number of majority carriers crossing the junction constitutes a current called as the forward current.

Description : Draw construction of PVC gang capacitor and describe it’s working.

Last Answer :  Diagram Working  In plastic core capacitor, poly-vinyl chloride (PVC) type of plastic film is used as dielectric between the fixed & movable vanes instead of air. This increases ... & results in great reduction of size of capacitor in comparison with the air core capacitor.

Description : Explain with neat sketch construction of PIN Diode. Draw its characteristics in reverse bias mode. 

Last Answer : Construction A PIN diode is made up of three semiconductor materials; two heavily doped P- and N- type material separated by an intrinsic (undoped) semiconductor (I) as shown in above figure ... . This advantage allows the PIN diode to process even weak signals.  Characteristics

Description : Draw the construction diagram of air core inductor. List two applications

Last Answer : Applications: i. It is used for construction of IF and RF tuning coils. ii. It is used for interstage coupling.

Description : Draw the circuit diagram of bridge rectifier and label it. 

Last Answer : Circuit Diagram Bridge rectifier

Description : Draw a label diagram of ferrite core inductor.

Last Answer : Ferrite core inductor

Description : Draw the clipper circuit using series and shunt diode.

Last Answer : Fig: A series negative clipper (OR) Fig: Series positive clipper Fig: Parallel positive clipper (OR) Fig: Parallel negative clipper

Description : Draw the constructional diagram of iron core inductor and write the working of it.

Last Answer : Iron core inductors allow high inductance value but are limited in high frequency capacity due to hysteresis and eddy current losses. Iron core increases the magnetic induction of a ... certain point this result in a useful increase in inductance. Beyond that point, inductance decreases.

Description : Define Ferromagnetic materials. Draw B- H Curve.

Last Answer : Ferromagnetic materials: The materials which possess magnetism in the absence of applied magnetic field is known as ferromagnetic materials.

Description : Draw the characteristics of tunnel diode and write two applications of it.

Last Answer :  Characteristics:  Applications: 1. In the digital networks 2. As a high speed switch 3. As a high frequency oscillator 4. High speed computers

Description : Draw and describe working of positive clamper.

Last Answer : Diagram- Operation In the first negative half cycle after turning on the circuit, the diode acts as a closed switch and charges the capacitor to peak input voltage Vm with the polarities. In all the ... Vo as,  This shows that the clamper adds a positive DC shift. Waveform

Description : Draw the B-H curve for hard and soft magnetic material.

Last Answer : Diagram: The B-H curve for hard and soft magnetic material

Description : Draw and explain V-I characteristics of a P-N junction diode.

Last Answer : V-I Characteristics of a P-N junction: V-I characteristics of a Diode: The V-I characteristics can be divided in two parts. 1. Forward characteristics. 2. Reverse ... plot a graph with reverse voltage on horizontal axis and current on vertical axis, we obtain reverse characteristics.

Description : Draw symbol of (i) Tunnel diode (ii) LED

Last Answer : (i) Tunnel diode: (ii) LED:

Description : Define Inductor. Draw its symbol. 

Last Answer : An inductor is a passive electronic component that stores energy in the form of a magnetic field  

Description : Draw and explain the working of combinational Clipper with waveforms.

Last Answer : Explanation:- As shown in figure the combinational clipper is the combination of positive biased and negative biased clipper. The combinational clipper can be used to clip both two independent ... open circuit. Hence the value of output voltage cannot exceed the voltage level of VB2. 

Description : Draw V-I characteristics of p-n junction diode? Define static and dynamic resistance of diode.

Last Answer : Static Resistance: The resistance offered by a p-n junction diode when it is connected to a DC circuit is called static resistance.  (OR) It is the ratio of DC voltage applied across diode ... The dynamic resistance of a diode is the ratio of change in voltage to the change in current. 

Description : Draw labeled diagram of air core inductor.

Last Answer : Diagram of air-cored inductor :

Description : Draw and describe construction of LED .

Last Answer : Construction of LED Fig above shows the construction of LED. Here an N-type layer is grown on a substrate by a diffusion process. Then a thin P-type layer is grown on ... takes place. After passing through the P-region the light is emitted from the window provided at top.

Description : Draw and explain B-H curve.

Last Answer : Diagram: Explanation: B-H curve is obtained while plotting the graph between B & H for a magnetic material while magnetized through one complete cycle of magnetization. The value of ... measure of the energy dissipated due to hysteresis, more the area higher is the hysteresis loss. 

Description : Define clipper. Draw circuit of negative shunt clipper.

Last Answer : Clipper: A clipper is a device designed to prevent the output of a circuit from exceeding a predetermined voltage level without distorting the remaining part of the applied waveform. OR Clipper: An ... the positive or negative peak or both from a specific level is known as clipper.

Description : Draw and describe the VI characteristics of zener diode

Last Answer : A zener diode is operated only in the reverse-bias region. (generally written as VR) is increased, the reverse current (usually called zener current, IZ) remains negligibly small up to ... out of the breakdown region, when the applied reverse voltage is reduced below the breakdown voltage.  

Description : Draw & describe construction of LDR

Last Answer : Description: 1. Photo resistors (or LDR) are manufactured from photo-conductive semiconductor materials such as cadmium sulphide (CdS), cadmium selenide (CdSe) and lead sulphide (PbS). 2 ... of photo resistors may be several mega ohms in total darkness and less than100Ω, when well illuminated.

Description : Draw VI characteristics of Tunnel diode & describe it.

Last Answer : Symbol of TUNNEL DIODE operating principle of tunnel diode Working  The operation of tunnel diode is based on special characteristics known as negative resistance. The width of the ... tunneling & hence the name of the high impurity density PN junction is called as tunnel diode.