What are the most important advantages of the Schottky  barrier diode?

1 Answer

Answer :

Lower forward resistance and low noise.

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Description : List applications of Schottky diode and Laser diode.

Last Answer : Application of Schottky diode:  It is used in rectification of very high frequency signals. It is used in communication system circuits. It is used in AC to DC converters. It is used in Radar ... etc. It is used in welding. It is used as a light source in fibre optic communication.

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 : Describe working of schottky diode with neat construction

Last Answer : Applications: 1) RF mixer and Detector Diode. 2) Power Rectifier 3) Voltage Clamping 4) Stand-alone photovoltaic system in order to prevent batteries from discharging purpose for the ... . 7) Low Voltage Power Supply Circuits. 8) To rectify very high frequency signals.

Description : applications of Schottky diode.

Last Answer : 1) To rectify very high frequency signals. 2) As a switching device in digital computers. 3) In clipping & and clamping circuits. 4) In low power schottky TTL circuits. 5) In mixing and detecting circuits used in communication systems. 6) In low voltage power supply circuits.

Description : What is the use of Schottky diode?

Last Answer : Schottky diode are use in SMPS, Sample and hold circuits and voltage clamping etc.

Last Answer : It is semiconductor diode with a low forward voltage drop and very high switching action

Description : Can the barrier voltage of a diode act as a voltage source?

Last Answer : No, we don not consider the barrier voltage of a diode to beable to act as a voltage source. The barrier voltage arises duringconstruction of the p-n junction, and it results from ... as a voltage sourcebecause it cannot supply current the way we understand conventionalvoltage sources are able do.

Description : Why can't the potential barrier of a diode be used as a voltage source?

Last Answer : The potential barrier of a diode is caused by the movement ofelectrons to create holes. The electrons and holes create apotential barrier, but as this voltage will not supply current, itcannot be used as a voltage source.

Description : When a reverse bias is applied to a diode, it will a. Raise the potential barrier b. Lower the potential barrier c. Increases the majority-carrier a current greatly d. None of these

Last Answer : a. Raise the potential barrier

Description : Avalanche breakdown in a diode occurs when a. Potential barrier is reduced to zero. b. Forward current exceeds certain value. c. Reverse bias exceeds a certain value. d. None of these

Last Answer : c. Reverse bias exceeds a certain value.

Description : Give reasons : (a) Window glass of old building look milky. b) Window glass of old building is thick at bottom. (c) CaCl2  will introduce Schottky defect if added to AgCl crystal.

Last Answer : (a) Due to annealing over a number of years glass acquires some crystalline character. (b) Glass is not a true solid. But a super-cooled liquid of high viscosity. It has the property to ... to maintain electrical neutrality. Thus a hole is created and lattice site for every Ca2+ ion introduced. 

Description : In digital ICs, Schottky transistors are preferred over normal transistors because of their (A) Lower Propagation delay. (B) Higher Propagation delay. (C) Lower Power dissipation. (D) Higher Power dissipation.

Last Answer : Ans: A Lower propagation delay as shottky transistors reduce the storage time delay by preventing the transistor from going deep into saturation.

Description : What type of bias opposes the PN junction barrier?

Last Answer : Forward.

Description : What is the relative length of the time constant for the diode capacitor combination in a damper (long or short)?

Last Answer : Short time constant.

Description : What is the condition of the diode in a series limiter when an output is developed? In a parallel limiter?

Last Answer : Conducting, cutoff.

Description : In the tunnel diode, the tunneling current is at what level when the forbidden gap of the N-type material is at the same energy level as the empty states of the P-type material?

Last Answer : Minimum.

Description : Why is electron flow with the arrow in the symbol of a Zener diode instead of against the arrow as it is in a normal diode?

Last Answer : Because Zener diodes are operated in the reverse bias mode.

Description : During avalanche effect breakdown, what limits current flow through the diode?

Last Answer : an external current-limiting resistor

Description : What is the doping level of an avalanche effect diode when compared to the doping level of a Zener-effect diode?

Last Answer : The doping level of an avalanche effect diode is lower.

Description : What is the name of the simplest type of rectifier which uses one diode?

Last Answer : The half-wave rectifier.

Description : When checking a diode with an ohmmeter, what is indicated by two high resistance measurements?

Last Answer : The diode is open or has a high-forward resistance.

Description : What is the greatest threat to a diode?

Last Answer : Heat.

Description : What type of diode has orange, blue, and gray bands?

Last Answer : 1N368.

Description : What is meant by diode ratings?

Last Answer : They are the limiting values of operating conditions outside which operations could cause diode damage.

Description : What is used to show how diode parameters vary over a full operating range?

Last Answer : A characteristic curve.

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Last Answer : Forward bias.

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Last Answer : Point-contact.

Description : In reference to the schematic symbol for a diode, do electrons flow toward or away from the arrow?

Last Answer : Toward the arrow.

Description : What is the purpose of a PN junction diode?

Last Answer : To convert alternating current into direct current

Description : For a diode to act as a rectifier, should it be connected in series or parallel with the load?

Last Answer : Series.

Description : What term is used to describe the period when the diode is not conducting?

Last Answer : Cutoff.

Description : Describe the output of a laser diode.

Last Answer : The LD's output has a narrow spectral width and small output beam angle.

Description : Why would a laser diode be used in a low-data-rate digital application?

Last Answer : When extremely high transmitter output powers are required.

Description : Is the drive circuitry generally more complex for an LED or a laser diode? Why?

Last Answer : For a laser diode. The laser diode transmitter generally contains output power control circuitry and may contain a TE cooler and some circuitry associated with the TE cooler.

Description : What is the typical back-to-forward resistance ratio of a good-quality diode?

Last Answer : 10-to-1 ratio.

Description : At frequencies above 100 megahertz, the intrinsic (i) region causes a pin diode to act as what?

Last Answer : Variable resistance.

Description : What is the capacitive reactance across a point-contact diode as compared to a normal junction diode?

Last Answer : Lower.

Description : During the manufacture of a point-contact diode, what is the purpose of passing a relatively large current from the catwhisker to the silicon crystal?

Last Answer : . To form a small region of p-type material

Description : What causes dc bias energy to be absorbed by avalanche electrons and given up to the microwave field applied to an avalanche transit-time diode?

Last Answer : The negative-resistance property.

Description : What is the junction arrangement of the original avalanche transit-time diode?

Last Answer : Pnin.

Description : What limits the usefulness of high-gain, tunnel-diode frequency converters?

Last Answer : Stability problems.

Description : What is the purpose of the circulator in a tunnel-diode amplifier?

Last Answer : Prevent feedback to the tuned input circuit.

Description : Why is the tunnel diode loosely coupled to the cavity in a tunnel-diode oscillator?

Last Answer : To increase the stability.

Description : The pin diode is primarily used for what purpose?

Last Answer : A switching device.

Description : What determines the frequency of a tunnel-diode oscillator?

Last Answer : The tuned circuit or cavity frequency.

Description : What is the primary difference between a diode and a triode?

Last Answer : The triode contains a third element called the control rid.

Description : A large negative voltage is applied to the plate of a diode, and a largewhat tube parameter has been exceeded?

Last Answer : Peak Inverse Voltage (PIV).

Description : An ac voltage is applied across a diode. The tube will conduct when

Last Answer : Positive.

Description : Before a diode will conduct, the cathode must be what polarity relative

Last Answer : Negative.

Description : Name the two series circuits that exist in a diode circuit.

Last Answer : Filament and plate.