PWM waveforms are commonly used to control the speed of DC motors. The mark/space ratio of the digital wave-form can be defined either by using an adjustable analogue voltage level (in the case of a ...

PWM or Pulse Width Modulation has generally been regarded as too complicated for PC fan speed control compared against using rheostats or linear voltage regulators such as the LM317. I present here a ...

将PWM与一个小型R-2R梯形DAC相结合，既可大大减小PWM纹波，又能增加DAC分辨率，从而提高两方面的性能。本设计实例利用一个8电阻阵列和3个输出引脚对R-2R梯形DAC进行修改重构，修改的目的是将底部2R连接到PWM输出而不是将其接地。 将PWM和小型R-2R梯形DAC相结合 ...

Pulse width modulation is a form of signal communication that transposes a signal from analog to digital form. Analog signals with changing amplitude and frequency pass through a comparator and are ...

In IC design, the typical approach for generating a pulse width-modulated (PWM) signal from an analog value (such as in the control loop for a switch mode power supply) uses a ramp or triangle wave ...

Hello,<P>After reading a few post from <B>stickmewithneedles</B> and <B>Unobtanium</B>, I'm planning on making a thermal fan control circuit employing PWM. <P>I've no EE degree, but I love electronics ...

High current PWM controller announcements include an 80A device from International Rectifier and a 60A chip from TI. IR’s 80A programmable two-phase interleaved pulse width modulation (PWM) controller ...

Toshiba offers samples of a compact, SPI‑enabled gate driver that helps enhance safety and reduce wiring for high‑current automotive motor systems.