Hello, I’m creating a converter circuit in Qspice and would like to obtain the duty ratio (Duty) from the waveform. Since there doesn’t seem to be a direct way to measure the Duty, I tried to get the on-time instead using the following command, but it didn’t return the on-time shown in the wavefor…

Well, actually, the best approach is always to use a C++ block for this type of processing. I have uploaded a pulse analyzer that can provide you with frequency, duty cycle, and pulse count. This is definitely better than using a subcircuit with native devices and should be more reliable. Symbols-…

How to measure duty

QSPICE

KSKelvin November 25, 2025, 9:21am 8

I updated the method in Measure-PWM.qsym and it will work with cshunt included.

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