Ethan Winer has been an audio engineer and professional musician for more than 50 years. His Cello Rondo music video has received nearly 2 Million views on YouTube and other web sites, and his book The Audio Expert published by Focal Press, now in its second edition, is used as the main course text at major universities and recording schools. Ethan is also a principal at RealTraps, a US manufacturer of high quality acoustic treatment.

Failed to find DC operating point for AC analysis Thanks again guys, I get it now. Від Ethan Winer · #156676 ·

Failed to find DC operating point for AC analysis LOL, I found a solution: I ran it with .tran, then selected View .. FFT to see the response of the two analog outputs. But I'm still curious why I can get .ac to work. Від Ethan Winer · #156672 ·

Failed to find DC operating point for AC analysis Thanks Andy. If you read my replies to John, I'm not trying to get a response plot of digital circuits. There are two analog outputs, and those are what I want to see. I did connect a resistor to grou Від Ethan Winer · #156670 ·

Failed to find DC operating point for AC analysis That won't give me the true response of the generator made from shift registers. I know it's fairly flat, but I need confirmation. Surely there's a way to get this circuit to work with .ac analysis! I Від Ethan Winer · #156667 ·

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