0
What is the use of IC 555 in generating pulse width modulation signal?
Wiki User
∙ 12y ago
A pulse width modulated signal would be very useful in a switching power supply. This is but one example. Note, however, that there are better examples than the 555 for use in a switching power supply.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is difference between pulse width modulation and pulse position modulation?
Frequency modulation, as the name suggests, modulates the carrier by changing the frequency of the signal emitted. Pulse width modulation, changes the on-time of a square wave, but leaves the frequency of the carrier wave unchanged. So, in frequency modulation, the frequency will vary between, say, 80kHz and 120kHz with a constant power level, but in pulse width modulation, the frequency will stay at 100kHz, but the on-time (the length of each pulse) will vary, hence the power level will vary accordingly.
How many types of pulse width modulation techniques are there?
as many as there are ways to place points on a line segment
How do you calculate the width of the pulse in a pulse width modulation?
i'm not really sure, but if i'm not mistaken, you should know the frequency of the PWM and it's duty cycle. For an example, if f = 10khz & duty cycle = 90%. f=1/t, so t=100microsecond, 90/100 x 100microsecond = 90microsecond. So the width of PWM is 90microsecond
What is dcdc chopper?
A chopper or DC-DC converter is a circuit or technique used to convert a constant DC signal into a variable DC signal where by using switching technique known as PWM(pulse width modulation). A chopper is a static device that converts dc input into dc output voltage directly. A chopper may be thought of as an ac transformer since they behave the same.
Why use dc motor not stepper motor in robot?
DC motors use PWM (pulse width modulation), which can easily increase or decrease the power to the motor, thereby increasing or decreasing the motor speed by modulating the width of the pulse. Stepper motors have fixed frequencies, thereby having fixed motor speeds. As a result, the speed of the stepper motor cannot be controlled when the load is increased.
What do you mean by pulse width modulation?
pulse width modulation is nothing but changing on and off time period of a waveform without changing its frequency
Explain with diagram the technique Pulse-amplitude modulation?
Explain with diagram the technique Pulse-width modulation?
What is pwm?
PWM is Pulse Width Modulation. It is a Digital control is used to create a square wave, a signal switched between on and off.
What is the difference between space vector modulation and pulse width modulation?
There is no difference.
What is the difference between Pam ppm and pwm in digital communication?
PAM-pulse Amplitude Modulation It encodes information in the amplitude of a sequence of signal pulses. PPM-Pulse Position modulation PWM-Pulse Width Modulation.It results in variation of average waveform.
What are the types of pulse modulation?
Pulse width mod, pulse amplitude mod, pulse position mod, pulse code mod.
Space vector modulation for matrix converter?
space vector modulation id an algorithm of the control of the control of pulse width modulation
How do you calculate the width of pulse in pulse position modulation?
The width of the pulse in PPM is not important, but is usually very narrow and constant in any given PPM system.
What is difference between pulse width modulation and pulse position modulation?
Frequency modulation, as the name suggests, modulates the carrier by changing the frequency of the signal emitted. Pulse width modulation, changes the on-time of a square wave, but leaves the frequency of the carrier wave unchanged. So, in frequency modulation, the frequency will vary between, say, 80kHz and 120kHz with a constant power level, but in pulse width modulation, the frequency will stay at 100kHz, but the on-time (the length of each pulse) will vary, hence the power level will vary accordingly.
Which modulation technique is most prone to noise PWM or AM?
AM = Amplitude Modulation and is more prone to noise because the signal amplitude caries the intellegence, Noise changes this easily. PWM is Pulse Width Modulation and noise does not change the width of the pulses, though it may introduce other pulses. Therefore the original intellegence is still recoverable.
What is need of space vector pulse width modulation?
due to space vector modulation we can eliminate the lower order harmonics
Smaller the pulse width larger is the bandwidth How?
For the Radar Case: The bandwidth of the pulse is the reciprocal of the Pulse Duration (called Pulse Width) as any filtering needs to be able to detection and follow the pulse shape and its edges. The pulse width is the AM modulation to a Fixed Frequency Carrier Frequency and the AM modulation will be greater bandwidth then the Carrier Frequency. As you are attempting to reject receiving other emissions and noise that do not match your own emissions such that your receiver is "match filtered" to your emissions, your receiver bandwidth will be at least the reciprocal of the pulse width but is lightly to be a smaller bandwidth then the reciprocal of the pulse width.
