Draw and explain the working of combinational Clipper with waveforms.

1 Answer

Answer :

image

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 levels depending upon the bias voltages. • During the positive half cycle of input the diode D1 is forward biased while diode D2 is reverse biased. Therefore diode D1 conducts and will act as a short circuit ,while D2 acts as open circuit. Hence the value of output voltage cannot exceed the voltage level of VB1. • Similarly during the negative half cycle of input the diode D2 is forward biased while D1 is reverse biased. Therefore D2 conducts and act as a short circuit while D1 acts as open circuit. Hence the value of output voltage cannot exceed the voltage level of VB2. 

Related questions

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

Last Answer : Circuit Diagram:    

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 : 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 : Compare clipper and clamper

Last Answer : Sr. No Parameter Clipper Clamper 1 Components used Diode, Resistors  Diode, Capacitors, Resistors 2 Function To remove a part of input waveform To add a DC ... Application Diode clamp, wave shaping circuits  Voltage Multipliers  5 Configuration

Description : Write two applications of clipper and two of clamper.

Last Answer : Application of Clipper:  In the case of generating new waveforms and/or shaping the existing older waveforms. Clippers can be used as freewheeling diodes in protecting the transistors from transient ... called as direct current restorers as they clamp the wave forms to a fixed DC potential.

Description : Define clipper and clamper.

Last Answer : Clipper: The circuit with which the waveform is shaped by removing (or clipping) a portion of the applied wave is known as a clipper.  Clamper: A circuit that shifts either positive or negative peak ... a clamping circuits or clamper. These circuits are also called D.C. restorer or D.C. inserter

Description : List two applications of i) clipper ii) clamper.

Last Answer : Clipper:  1. Diode clamp 2. wave shaping circuits 3. Clippers can be used as voltage limiters and amplitude selectors. Clamper:  1. Voltage Multipliers 2. For the protection of the ... can be used for removing the distortions 4. For improving the overdrive recovery time clampers are used.

Description : Draw negative clamper circuit and explain its working. 

Last Answer : Diagram: Working: During the positive half cycle of the input AC signal, the diode is forward biased and hence no signal appears at the output. In forward biased condition, the diode allows ... - 2Vm} which have the same polarity with each other. As a result, the signal shifted downwards. 

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

Last Answer : star and delta connection

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

Last 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

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 : 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 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 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 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 RC differentiator circuit.

Last Answer : RC differentiator circuit :

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 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 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.

Description : Draw BH Curve and define coercivity and reluctivity.

Last Answer : BH Curve: Definitions: Coercivity: For ferromagnetic material the coercivity is the intensity of the applied magnetic field required to reduce the magnetization of that material to zero after the ... to the ratio of intensity of the magnetic field to the magnetic induction of the material. 

Description : Draw and describe constructional diagram of electrolytic capacitor.

Last Answer : Electrolytic capacitor is a polarized capacitor. This type of capacitor consists of pasty, semiliquid electrolyte between aluminum foil electrodes or plates. An electrolytic capacitor is a type ... the ends closed with wax and then sealed into an aluminium container as shown in fig. 

Description : Draw the symbol of i) Iron core inductor ii) variable capacitor iii) resistor iv) Ferrite core inductor

Last Answer :  Iron core inductor:  Ferrite core inductor:  

Description : Draw ideal and practical voltage source and current source.

Last Answer : Voltage Source: Current Source:

Description : Explain the working principle of slug tuned inductor.

Last Answer : The value of inductor increases, when the slug (moving coil) is moved into the coil winding and hence decreases the resonant frequency of the tuned circuit. Similarly, when the slug is moved out of the ... be varied by using movable core which can be moved up or down by using screw driver.

Description : Explain the working of TDR along with its symbol and characteristics. 

Last Answer : TDR are also called as thermistors. Thermally sensitive materials are used to manufacture thermistors. Depending on the temperature co- efficient of resistance value thermistors are classified as ... used when a drastic change in resistance is required at specific temperature. RαT

Description : Explain the working principle of electrolytic capacitor.

Last Answer : Principle: Electrolytic capacitors are using a chemical feature of some special metals, on which by anodically oxidation, an insulating oxide layer or dielectric originates. The metal is placed in an ... form the thin oxide dielectric, this type of capacitor is called electrolytic'.

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.