How do u plot in frequency domain using...? - Electronic Circuits Projects Diagrams Free

Rasengan · 29th December 2004, 11:32 PM

Hi,

How do u plot in frequency domain using Pspice or electronics workbench/multisim softwares?

Thanks

Russlk · 30th December 2004, 02:57 AM

My Pspice manual is 15 years old, so the interface may be different, but somehow you have to get the SPICE command into the SPICE file. The command is: .AC XXX p f1 f2
Where XXX is either:
LIN for linear frequency scale
OCT for logrithmic scale by octave
DEC for logrithmic scale by decade
p is the number of data points per OCT or DEC
f1 is the start frequency
f2 is the end frequency
Note the period in front of AC, which denotes a command

The interface may be presented as a Fourier converter, but you will have to fill in the parameters.

pop · 31st December 2004, 12:14 AM

That's right RusselK.

With newer pspice versions the procedure is exactly the same. You chose AC sweep, then AC sweep type (linear, logarithmic) and then enter start and end frequency and points per decade.

samcheetah · 31st December 2004, 11:40 AM

yes, and multisim (electronics workbench) also has the AC sweep function. go to Simulate -> Analyses -> AC analysis then define the start and stop frequencies and the type of sweep (logarithmic or linear etc). also define the variables (nodes) which you want to evaluate

Da_Engineer · 22nd July 2006, 09:10 PM

HI everyone,

I am doin a design and i need to know wat to add as output variables in the

SIMULATE---> AC ANalysis using multisim.. I need to show magnitude

response plot, and it should have a ripple in the pass band.. size of ripple

1DB I would appreciate any help,

below is how to contact me: and the addres of the instructions given.

www.geocities.com/jerezelectronics/filter.doc

Aim = MAYIMBEJ im on right now.

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29th December 2004, 11:32 PM	(permalink)
Rasengan	How do u plot in frequency domain using...? Hi, How do u plot in frequency domain using Pspice or electronics workbench/multisim softwares? Thanks

30th December 2004, 02:57 AM	(permalink)
Russlk	My Pspice manual is 15 years old, so the interface may be different, but somehow you have to get the SPICE command into the SPICE file. The command is: .AC XXX p f1 f2 Where XXX is either: LIN for linear frequency scale OCT for logrithmic scale by octave DEC for logrithmic scale by decade p is the number of data points per OCT or DEC f1 is the start frequency f2 is the end frequency Note the period in front of AC, which denotes a command The interface may be presented as a Fourier converter, but you will have to fill in the parameters. __________________ see my website: www.geocities.com/russlk

31st December 2004, 12:14 AM	(permalink)
pop	That's right RusselK. With newer pspice versions the procedure is exactly the same. You chose AC sweep, then AC sweep type (linear, logarithmic) and then enter start and end frequency and points per decade.

31st December 2004, 11:40 AM	(permalink)
samcheetah	yes, and multisim (electronics workbench) also has the AC sweep function. go to Simulate -> Analyses -> AC analysis then define the start and stop frequencies and the type of sweep (logarithmic or linear etc). also define the variables (nodes) which you want to evaluate

22nd July 2006, 09:10 PM	(permalink)
Da_Engineer	HI everyone, I am doin a design and i need to know wat to add as output variables in the SIMULATE---> AC ANalysis using multisim.. I need to show magnitude response plot, and it should have a ripple in the pass band.. size of ripple 1DB I would appreciate any help, below is how to contact me: and the addres of the instructions given. www.geocities.com/jerezelectronics/filter.doc Aim = MAYIMBEJ im on right now.