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Why the output of the envelope detector changed frequency when the audio frequency was varied?
Wiki User
∙ 11y ago
answer for me please
Wiki User
∙ 11y ago
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Efficiency of a motor?
ratio of energy output to energy input.
What process is occurring when you change a test instrument's output to agree with a known standard?
Your answer is Calibration.
Im most simple machines the work output of a machine will overcome the what?
Work input.
All simple machines ideally work on the principle that?
ANSWER: work input equals work output
What are the 4 parts of a technological system?
The for parts of the computer system are 1,hardware 2,software 3,data 4,users
Explain about the effect of the time constant RC in envelope detector?
The circuit that generates signal having the shape like imaginary curve is called an envelope detector. The effect of the time constant RC in envelope detector is that the output follows the input curve and the circuit performs like a demodulator.
What is a rectifier detector?
Most practical envelope detectors use either half-wave or full-wave rectification of the signal to convert the AC audio input into a pulsed DC signal. Filtering is then used to smooth the final result. This filtering is rarely perfect and some "ripple" is likely to remain on the envelope follower output, particularly for low frequency inputs such as notes from a bass guitar. More filtering gives a smoother result, but decreases the responsiveness; thus, real-world designs must be optimized for the application.An envelope detector is an electronic circuit that takes a high-frequency signal as input and provides an output which is the envelope of the original signal. The capacitor in the circuit stores up charge on the rising edge, and releases it slowly through the resistor when the signal falls. The diode in series rectifiesthe incoming signal, allowing current flow only when the positive input terminal is at a higher potential than the negative input terminal.
Smoke detector output?
dons
Who you can change th frequency of a constant frequency signal?
Who? Don't you mean what? Your question makes little sense. If the frequency is constant as you say, then it cannot be changed. However, if talking about radio equipment constant frequencies can be changed through a process known as Mixing. That is a second source of constant frequency is mixed in with the other frequency and you will get the sum and the remainder output. In other words, if the frequency of the 1st source is say 5 mhz and the frequency of the other source is 2 mhz, then on the output you would get 7 mhz and 3 mhz. This can be done with other frequencies also. If you are talking about 60hz (USA AC frequency), that can be changed using a VFD or Variable Frequency Drive.
How the envelope detector converts a 455 khz am signal to the message signal?
The diode flips the entire signal to the positive region like a rectifier. Then the parallel rc combination is kept charged or discharged by the carrier frequency, 455kHz. Since the Signal sits on top of the carrier, the output is the original sent signal with some ripple distortion, this can be taken care of with a simple lowpass rc filter
When the diode in an envelope detector rectifies the electrical current how come the output isn't buzzy like when a sine wave has the bottom completely cut out the output sounds buzzy?
because the capacitor connected to the diode on the output side "filters out" the areas that would normally be chopped out by the diode. It does that, for example, by maintaining the voltage during the cut out portion of the sine wave.
What is output frequency of bridge rectifier?
twice the input frequency
What happens to the output waveform input voltages were changed?
if the input is changed then the output is also changed.
What is audio output frequency?
Audio output frequency is that range of frequencies that can be heard. For humans, that is generally considered to be the range of 20Hz to 20kHz.
Difference between natural frequency and resonance frequency?
In natural frequencies the output of the system will be less than the maximum level. In the resonance frequency the output of the system will be the maximum level.
What is the difference between the modulating signal and the demodulating signal in output of the detector?
Distortion.
How are FM signal generated?
There are several methods for generating FM signals but they all basically involve an oscillator with an electrically adjustable frequency. This type of oscillator uses an input voltage to affect the frequency of its output. For example, when the applied voltage increases, the oscillator output frequency increases and when the applied voltage decreases, the oscillator output frequency decreases as well. If no voltage is applied to the oscillator its output will be a signal at its centre frequency. The amount of frequency variations is deviated around the oscillators' centre frequency.
