The utility model relates to a novel sine wave pulse-width modulation circuit, which comprises a square wave generation circuit, a sine wave generation circuit and a triangular wave generation circuit and is characterized in that the output terminal of the sine wave generation circuit and the ...
The 1M ohm resistor is used to adjust the amplitude of the sine wave signal generated by the WBO. The amplitude of the sine wave should be adjusted in such a way that it matches with the amplitude of the ramp signal generated. The image of PWM circuit wired in the breadboard is given ...
Pulse-width modulation (PWM) provides the precision and the control range required by modern electronic devices. Using a simple circuit as an example, a modulating signal in the form of a sine wave applies to one terminal and a carrier signal applies to the other terminal. The outp...
For the current mainstream PWM converter with IGBT as its switching device, the waveform is very close to the standard sine wave. The THD% harmonic distortion is usually below 5%, far less than the rectifier and inverter circuit based on the diode and SCR. The disadvantage is that high-...
A simple circuit for generating amplitude-modulated signals (conventional AM and double side band (DSB) using sine-wave crossings (SWC) technique is reported. It can be considered as a modification to Piwnicki''s circuit and has the feat... FYATH,S R. - 《International Journal of Electronic...
At the destination of the communications circuit, the pulse code modulator converts the binary numbers back into pulses having the same quantum levels as those in the modulator. These pulses are further processed to restore the original analog waveform. When pulse modulation is applied to a binary...
A microcomputer having a signal generating circuit which generates pulse width modulation signals defined by a carrier wave, and which controls controlled portions according to pulse width modulating signals. The signal generating circuit comprises a carrier wave defining timer which outputs a value varyin...
Motor rotation regulation circuit - uses controlled rectifier bridges for each phase supplied with oscillator pulses via pulse former The oscillator pulse train is fed to a frequency divider followed by a buffer register with the same number of outputs as the frequency divider division ... B Peter...
circuit, and a PWM control circuit for detecting a voltage and current of the resonance circuit by means of a pulse transformer and a current detector, respectively, and feeding back the voltage and current to the H-bridge switching circuit so that the four semiconductor switching elements may ...
摘要: PURPOSE: To expand the adjusting range of a pulse width by installing a gate which executes the exclusive OR of an input signal and of a most-significant bit signal for an adjustment control signal, a delay gate circuit which delays its output and the like....