How do I view a waveform relative to some point other than ground using LTspice?
For example, how do I display the waveform of one side of a LC circuit relative to the other when neither side is grounded?
Thanks,
-Bill
LTspice question
Dec 24, 2011
4 Replies
When you set the probe on one side, don't release the mouse button. Move the mouse to the reference side (you'll see red and black probes just like a DVM), and then release.
Alternatively you can do it right in the waveform window, by creating a new trace and typing in "V(4)-V(5)".
Cheers
Phil Hobbs
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
845-480-2058
hobbs at electrooptical dot net
http://electrooptical.net
Or use a VCVS as an isolation amplifier. I do that, and similar things, to make scaled, sometimes filtered, "error" signals and such.
John
Or just "V(4,5)"
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)
Thanks, that works well. The waveform display options are new to me. I just figured out how to adjust the x and y limits using the manual limits option, but I haven't investigated all the other options. My circuits are fairly simple, so I don't need too many options.
Regards,
-Bill
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required