How does the current-diode detector differ from the voltage-diode detector?

How does the current-diode detector differ from the  voltage-diode detector?
by

1 Answer

Answer :

The current-diode detector is in parallel with the input and load.
by

Related questions

which components act as the filter network in the diode detector?

Description : which components act as the filter network in the diode detector?

Last Answer : C1 and R1.

What is the function of the diode in a series-diode detector?

Description : What is the function of the diode in a series-diode detector?

Last Answer : Rectifies the rf pulses in the received signal.

What does the simplest diode detector use to reproduce the modulating frequency?

Description : What does the simplest diode detector use to reproduce the modulating frequency?

Last Answer : The modulation envelope.

The term responsivity as it applies to a light detector is best described as ∙ A. the time required for the signal to go from 10 to 90 percent of maximum amplitude ∙ B. the ratio of the diode output current to the input optical power ∙ C. the ratio of the input power to output power ∙ D. the ratio of output current to input current

Description : The term responsivity as it applies to a light detector is best described as ∙ A. the time required for the signal to go from 10 to 90 percent of maximum amplitude ∙ B. the ratio of the diode ... . the ratio of the input power to output power ∙ D. the ratio of output current to input current

Last Answer : the ratio of the diode output current to the input optical power

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

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).

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

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

Last Answer : Positive.

What condition must exist on both the limiter and quadrature grids for current to flow in a gated-beam detector?

Description : What condition must exist on both the limiter and quadrature grids for current to flow in a gated-beam detector?

Last Answer : Both grids must be positively biased

The most common device used as a light detector in fiber optic communications system. A. LED B. Darlington phototransistor C. APDs D. PIN diode

Description : The most common device used as a light detector in fiber optic communications system. A. LED B. Darlington phototransistor C. APDs D. PIN diode

Last Answer : C. APDs

A ____________________ diode is the usual light detector for single-mode

Description : A ____________________ diode is the usual light detector for single-mode

Last Answer : PIN

Which of the following is NOT a common light detector ∙ a. PIN photodiode ∙ b. Photovoltaic diode ∙ c. Photodiode ∙ d. Avalanche photodiode

Description : Which of the following is NOT a common light detector ∙ a. PIN photodiode ∙ b. Photovoltaic diode ∙ c. Photodiode ∙ d. Avalanche photodiode

Last Answer : ∙ b. Photovoltaic diode

Draw the circuit diagram of practical diode detector and explain its working.

Description : Draw the circuit diagram of practical diode detector and explain its working. 

Last Answer : Circuit diagram of practical diode detector:  Explanation- The circuit operates in the following manner- The diode has been reversed so that now the negative envelope is demodulated. Due to this ... to produce AGC voltage. The DC AGC voltage is proportional to the amplitude of AM signal. 

Explain the demodulation of AM signal using diode detector.

Description : Explain the demodulation of AM signal using diode detector.

Last Answer : Simple diode detector:- Explanation:- This is essentially just a half wave rectifier which charges a capacitor to a voltage nearly to the peak voltage of the incoming AM waveform s(t). ... detector output is proportional to the signal strength. Stronger Am signal higher is the dc AGC voltage.

Draw the practical AM diode detector circuit. Sketch its input and output waveforms.

Description : Draw the practical AM diode detector circuit. Sketch its input and output waveforms. 

Last Answer : Practical AM diode detector 1. Skip distance:-Skip distance is defined as the shortest distance from a transmitter, measured along the surface of earth at which a sky wave of fixed frequency ... had taken place from a surface located at a greater height, called Virtual height of this layer.

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?

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.

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

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

Last Answer : an external current-limiting resistor

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?

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

What kind of effect is referred to a varying light producing a varying voltage output of a detector? A. Current effect B. Voltage effect C. Resistive effect D. Photovoltaic effect

Description : What kind of effect is referred to a varying light producing a varying voltage output of a detector? A. Current effect B. Voltage effect C. Resistive effect D. Photovoltaic effect

Last Answer : D. Photovoltaic effect

Sound waves transmitted from a source are sometimes weak when they reach the detector. What instrument is needed to boost the weak signal?

Description : Sound waves transmitted from a source are sometimes weak when they reach the detector. What instrument is needed to boost the weak signal?

Last Answer : An amplifier.

In the output of an ac error detector, what indicates the (a) direction and (b) amount of control necessary for correspondence?

Description : In the output of an ac error detector, what indicates the (a) direction and (b) amount of control necessary for correspondence?

Last Answer : (a) Phase. (b) Amplitude.

An error signal is the difference between what two quantities fed to the CT (error detector)?

Description : An error signal is the difference between what two quantities fed to the CT (error detector)?

Last Answer : Input signal and feedback.

Why is detector saturation not generally a problem in fiber optic communications systems?

Description : Why is detector saturation not generally a problem in fiber optic communications systems?

Last Answer : Because fiber optic communications systems operate at low optical power levels.

What are the four most common materials used in semiconductor detector fabrication?

Description : What are the four most common materials used in semiconductor detector fabrication?

Last Answer : Silicon, gallium arsenide, germanium, and indium phosphide.

For efficient operation, should a detector have a high or low responsivity at the operating wavelength?

Description : For efficient operation, should a detector have a high or low responsivity at the operating wavelength?

Last Answer : High.

Describe the operation of an optical detector

Description : Describe the operation of an optical detector

Last Answer : It is a transducer that converts an optical signal into an electrical signal. It does this by generating an electrical current proportional to the intensity of incident optical radiation.

What is the function of the detector?

Description : What is the function of the detector?

Last Answer : To extract the modulating audio signal.

How can a peak detector for pam be modified to detect pdm?

Description : How can a peak detector for pam be modified to detect pdm?

Last Answer : By making the time constant for charging the capacitor at least 10 times the maximum received pulse width.

What is the time constant of the resistor and capacitor in a peak detector for pam?

Description : What is the time constant of the resistor and capacitor in a peak detector for pam?

Last Answer : At least 10 times the interpulse period.

What characteristic of a pulse does a peak detector sample?

Description : What characteristic of a pulse does a peak detector sample?

Last Answer : Pulse amplitude or pulse duration

In its simplest form, what functions must a radar detector be capable of performing?

Description : In its simplest form, what functions must a radar detector be capable of performing?

Last Answer : Detecting the presence of rf energy.

How is a quadrature detector changed when used for phase demodulation?

Description : How is a quadrature detector changed when used for phase demodulation?

Last Answer : The quadrature grid signal is excited by a reference from the transmitter.

Name two advantages of the gated-beam detector.

Description : Name two advantages of the gated-beam detector.

Last Answer : Extreme simplicity, few components, and ease of adjustment.

What circuit functions does the tube in a gated-beam detector serve?

Description : What circuit functions does the tube in a gated-beam detector serve?

Last Answer : Limits, detects, and amplifies.

What is the primary advantage of a ratio detector?

Description : What is the primary advantage of a ratio detector?

Last Answer : Suppresses amplitude noise without limiter stages.

What is the function of an fm detector?

Description : What is the function of an fm detector?

Last Answer : Converting frequency variations of received fm signals to amplitude variations

What is the simplest form of fm detector?

Description : What is the simplest form of fm detector?

Last Answer : Slope detector.

To what circuit arrangement is a common-base detector equivalent?

Description : To what circuit arrangement is a common-base detector equivalent?

Last Answer : A diode detector followed by a stage of audio amplification.

Which junction acts as the detector in a common-base detector?

Description : Which junction acts as the detector in a common-base detector?

Last Answer : Emitter-base junction.

How is the output signal developed in the common-emitter detector?

Description : How is the output signal developed in the common-emitter detector?

Last Answer : By the collector current flow through R4.

Which junction of the transistor in the common-emitter detector detects the modulation envelope?

Description : Which junction of the transistor in the common-emitter detector detects the modulation envelope?

Last Answer : Emitter-base junction

Under what circuit conditions would the shunt detector be used?

Description : Under what circuit conditions would the shunt detector be used?

Last Answer : When the input voltage variations are too small to give a usable output from a series detector.

What three functions does the transistor in a regenerative detector serve?

Description : What three functions does the transistor in a regenerative detector serve?

Last Answer : Oscillator, mixer, and detector.

What simple, one-transistor detector circuit uses the heterodyne principle?

Description : What simple, one-transistor detector circuit uses the heterodyne principle?

Last Answer : Regenerative detector.

To measure incident power, you must rotate the coupler detector of the wattmeter so that the arrow indicating power flow points toward which end of the transmission line?

Description : To measure incident power, you must rotate the coupler detector of the wattmeter so that the arrow indicating power flow points toward which end of the transmission line?

Last Answer : Load.

You have installed a Zener diode in parallel with a load. While measuring the voltage across the Zener diode it is found that it does not change as the current through the load increases. This means that the Zener diode __________. A. is working as it should B. is shorted C. is open D. does not regulate as it should

Description : You have installed a Zener diode in parallel with a load. While measuring the voltage across the Zener diode it is found that it does not change as the current through the load increases. This means that the ... is working as it should B. is shorted C. is open D. does not regulate as it should

Last Answer : Answer: A

A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current

Description : A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is the required value of series resistance with source? A) 5.45 Ω B) 6 Ω C) 7.2 Ω D) 6.38 Ω  

Last Answer : A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is the required value of series resistance with source? A) 5.45 Ω B) 6 Ω C) 7.2 Ω D) 6.38 Ω  

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

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.

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

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.

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?

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.

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

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.