Switcher CAD III - Electronic Circuits Projects Diagrams Free

ljcox · 30th May 2005, 06:05 AM

Does anyone know how to produce a Bode plot with this software?

I can produce oscilloscope traces, but not a Bode plot. My attempt at a BP resulted in a horizontal line at about -300dB. But the circuit I was simulating has a voltage gain of 10, so the BP should be 20dB in mid range.

Any assistance will be appreciated.

Len

FRIED · 30th May 2005, 12:22 PM

Use AC analysis. Simulate>edit simulation cmd>AC analysis.
For the source, Advanced>small signal AC analysis = 1
Also look at posts etc here
http://groups.yahoo.com/group/LTspice/

ljcox · 31st May 2005, 12:08 AM

Thanks Fried.

Len

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30th May 2005, 06:05 AM	(permalink)
ljcox	Switcher CAD III Does anyone know how to produce a Bode plot with this software? I can produce oscilloscope traces, but not a Bode plot. My attempt at a BP resulted in a horizontal line at about -300dB. But the circuit I was simulating has a voltage gain of 10, so the BP should be 20dB in mid range. Any assistance will be appreciated. Len

30th May 2005, 12:22 PM	(permalink)
FRIED	Use AC analysis. Simulate>edit simulation cmd>AC analysis. For the source, Advanced>small signal AC analysis = 1 Also look at posts etc here http://groups.yahoo.com/group/LTspice/

31st May 2005, 12:08 AM	(permalink)
ljcox	Thanks Fried. Len