PWM Signal from SoundCard Matlab script

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PWM Signal from SoundCard - Create a pwm signal using a standard soundcard. PWM Signals are used in a wide area of applications. Examples are a servos used for positioning in electromechanical control design (mechatronic). Here is a simple function that allows to create a pwm signal with a standard soundcard. Parameters are: pulsewidth and time between pulse-starts. One restriction is that the approach allows duty cycles up to 50% only. All you need is to add at the output of the soundcard is a resistor as load (1k) and a diode (1N4001). The image enclosed shows the output I got for: >> PWMSound(1.5e-3,10e-3); Requirements: · MATLAB Release: R14SP3 · Data Acquisition Toolbox
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