The following is not an application of varactor diode:
a) Parametric amplifier b) Frequency tuner c) Voltage controlled oscillator d) Phase shifter
Description : Draw the circuit diagram of varactor diode FM modulator and explain its working.
Last Answer : Varactor diode modulator is the direct method of FM generation wherein the carrier frequency is directly varied by the modulating signal. A varactor diode is a semiconductor diode whose ... the magnitude of frequency change is proportional to the amplitude of the modulating signal voltage.
Description : Draw the symbols of Schottkey-diode and Varactor diode.
Last Answer : Schottkey-diode
Description : When the reverse bias on a varactor is increased, what happens to the effective capacitance?
Last Answer : Capacitance decreases.
Description : The varactor displays what useful electrical property?
Last Answer : Variable capacitance.
Description : The varactor is a pn junction that acts as what type of electronic device?
Last Answer : Variable capacitor.
Description : What characteristic of a varactor is used in an fm modulator?
Last Answer : Capacitance.
Description : Suggest the diode material suitable to rectify 0.5V AC signal.
Last Answer : The diode material suitable to rectify 0.5V AC signal is silicon
Description : Draw symbols of zener diode and LED.
Last Answer : Symbol of zener diode : Symbol of LED
Last Answer : 10 ohm
Description : A light emitting diode (L.E.D.) can be made from:
Last Answer : Different compound use to get various colors Ex:- GaAs (gallium arsenide) > infared GaAsP (gallium arsenide phosphide) > Red, gallium(III) phosphide > green, InGaN (Indium gallium nitride) > Blue
Description : A single-phase full-bridge diode rectifier delivers a load current of 10A, which is ripple free. Average and rms values of diode currents are respectively (a) 10A, 7.07A (b) 5A, 10A (c) 5A, 7.07A (d) 7.07A, 5A
Last Answer : A single-phase full-bridge diode rectifier delivers a load current of 10A, which is ripple free. Average and rms values of diode currents are respectively 5A, 7.07A
Description : Which diode exhibits negative resistance characteristic? (A) LED (B) Zener (C) Tunnel diode (D) PN diode
Last Answer : Which diode exhibits negative resistance characteristic? (A) LED (B) Zener (C) Tunnel diode (D) PN diode
Description : A PIN diode is: (1) A metal semiconductor point-contact diode (2) A microwave mixer diode (3) Often used as a microwave detector (4) Suitable for use as a microwave switch
Last Answer : A PIN diode is: Suitable for use as a microwave switch.
Description : Gunn diode is a: (1) Negative resistance device (2) Positive resistance device (3) High noise device (4) Low frequency device
Last Answer : Gunn diode is a: Negative resistance device.
Last Answer : A Zener diode is operated in the Breakdown Region
Last Answer : A Zener diode is operated in the Reverse bias around the knee of breakdown region mode as a voltage stabilizer.
Last Answer : Avalanche break down in a semiconductor diode occurs when Reverse bias exceeds a certain value
Description : How can you identify a zener diode?
Last Answer : It conducts current in either direction.
Description : How do we test a diode?
Last Answer : test
Last Answer : Applications of zener diode are : Zener diode can be use for voltage regulator. Zener diode can be use for clippers or limiters. Zener diode can be use for overvoltage protection. Zener ... reference. Zener diode can be use as transistor regulator. These are some applications of zener diode.
Description : What is the depletion region of a diode?
Last Answer : During the fussion In diode the some hole and electrons from both side created one layer at middle Its width increase when diode is in reverse bias conditions And decreased in.forward bias conditions.
Description : How much time a diode takes to switch ON in forward bias condition.
Last Answer : t=0 sec.
Last Answer : In Reverse bias of diode when the cathode is connected to positive and anode is connected to negative very small current flows this very small current is known as leakage current of diode.
Last Answer : Diode conducts when the anode voltage is greater than the cathode voltage.
Last Answer : Diode have two terminals.
Description : What is diode?
Last Answer : Diode (1) a two-terminal device that permits the flow of electric current in only one direction. Diodes are most often constructed by abutting n-type and p-type regions of a semiconductor, ... power applications (rectifier diodes). (2) a two terminal device that conducts in only one direction.
Description : Which of the following statements represents an application of a silicon controlled rectifier? A. To provide DC power for a main propulsion motor. B. For use as a voltage reference diode. C. For sensing flame in an automated burner. D. To eliminate power supply hum.
Last Answer : Answer: A
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 : 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 : One application of a digital multiplexer is to facilitate: (1) Code conversion (2) Parity checking (3) Parallel-to-serial data conversion (4) Data generation
Last Answer : One application of a digital multiplexer is to facilitate: Parallel-to-serial data conversion.
Last Answer : Wein bridge finds application in Frequency determination, Harmonic distortion analyser.
Last Answer : Integrated circuit design for particular application is known as Application Specific Integrated Circuit ASIC. ASIC have smaller size, less power consumption and less cost .