Application examples
164 AFG31000 Series Arbitrary Function Generator User's Manual
Motor speed control by pulse-width modulation
Pulse-width modulation (PWM) is used for controlling the speed of a DC motor or the luminance of an
LED (light emitting diode). Use the instrument PWM function to control the DC motor speed.
To control DC motor speed:
1. Connect the instrument output and a device under test (DUT) using a BNC-to-alligator clip
adapter.
2. Select Pulse as an output waveform and then select PWM as a modulation type.
3. Set the frequency to 100 kHz.
Figure 168: Duty rate changes motor speed
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