Date: Wednesday, July 15, 2026
Time: 11:00AM Pacific | 2:00PM Eastern
Duration: 60 minutes
How to Use an Oscilloscope to Demodulate PWM Signals in Single and Three-phase Power Conversion Designs
Pulse-width modulation (PWM) is at the core of modern power conversion—from motor drives and EV inverters to renewable energy systems. But how do you quickly verify that your control loop and switching behavior are working as intended?
By demodulating PWM signals on an oscilloscope, you can visualize the modulation envelope and quickly assess system behavior. In this webinar, learn practical techniques for demodulating both single- and 3-phase signals using common oscilloscope math and analytics tools to validate designs, debug issues, and optimize performance.
Topics to be covered in this webinar:
- Basic PWM theory and operation
- What is overmodulation and why is it used?
- Simple Line-Reference PWM voltage de-modulation
- Complex Line-Line (3-phase) PWM voltage de-modulation
- What de-modulation envelopes can tell you about control system behavior
Who should attend?Control, Inverter subsection, power section and power system engineers who use oscilloscopes to understand power conversion control system and power section functioning.
What attendees will learn? Gain a better understanding about how to use common oscilloscope math and analytics tools to understand, validate and debug control system PWM signaling.
Presented by: Jon Shechter, Teledyne LeCroy Product Marketing Engineer