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Anonymous users2024-02-061. PWM control is also known as pulse width modulation.
2. The pulse width modulation mode is an analog control square spine pants type, which uses the digital output of the microprocessor to control the analog circuit, and modulates the bias of the transistor base or MOS tube gate according to the change of the corresponding load, so as to realize the change of the on-time of the transistor or MOS tube, so as to realize the change of the output of the switching regulated power supply.
3. The pulse width modulation mode can keep the output voltage of the power supply constant when the working conditions change, which is a very effective technology for using the digital signal of the microprocessor to control the pure file of the analog circuit. It is used in a wide range of fields, from measurement and communication to power control and conversion.
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Anonymous users2024-02-051. PWM control is also known as pulse width modulation.
2. The pulse width modulation mode is an analog control and disassembly method, which uses the digital output of the microprocessor to control the analog circuit, and modulates the bias of the transistor base or MOS gate according to the change of the corresponding load, so as to realize the change of the on-time of the transistor or MOS tube, so as to realize the change of the output of the switching regulated power supply.
3. The pulse width modulation mode can keep the output voltage of the power supply constant when the working conditions change, which is a very effective technology for controlling the analog circuit by using the digital signal of the microprocessor pure gear device. It is used in a wide range of applications, from measurement and spine control to power control and conversion.
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Anonymous users2024-02-041. PWM control is also known as pulse width modulation.
2. The pulse width modulation mode is an analog control mode pin, which uses the digital output of the microprocessor to control the analog circuit, and modulates the bias of the transistor base or MOS gate according to the change of the corresponding load, so as to realize the change of the on-time of the transistor or MOS tube, so as to realize the change of the output of the switching regulated power supply.
3. The pulse width modulation mode can keep the output voltage of the power supply constant when the working conditions change, and Wang Douju is a very effective technology for using the digital signal of the microprocessor to control the analog circuit. It is used in a wide range of applications, from measurement and communication to power control and conversion.
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Anonymous users2024-02-03Basic principle of pulse width modulation (PWM): The control mode is to control the on-off of the inverter circuit switching device, so that the output terminal obtains a series of pulses of equal amplitude, and uses these pulses to replace the sine wave or the required waveform. That is, multiple pulses are generated in half a cycle of the output waveform, so that the equivalent voltage of each pulse is a sinusoidal waveform, and the output obtained is smooth and there are few low harmonics.
By modulating the width of each pulse according to certain rules, the output voltage of the inverter circuit can be changed, and the output frequency can also be changed. For example, if a sinusoidal half-wave waveform is divided into n equal parts, a sinusoidal half-wave can be regarded as a waveform consisting of n pulses connected to each other. These pulses have equal widths, all equal to n, but with unequal amplitudes, and the top of the pulses is a curve, and the amplitude of each pulse varies according to a sinusoidal pattern.
If the above-mentioned pulse train is replaced by the same number of rectangular pulse trains of equal amplitude but not equal width, so that the midpoint of the rectangular pulse coincides with the midpoint of the corresponding sinusoidal equal parts, and the area (i.e., impulse) of the rectangular pulse and the corresponding sinusoidal part are equal, a set of pulse trains is obtained, which is the PWM waveform.
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Anonymous users2024-02-02PWM is the abbreviation of "pulse width modulation" in English.
The principle is to use the duty cycle of the pulse to replace the amplitude of the signal. Because the output amplitude of the PWM signal after passing through a suitable integrator or low-pass filter (which acts on average), is equal to the product of the duty cycle and the height of the pulse.
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