LT Spice noise

Sep 09, 2013 6 Replies

Hi, would someone try this for me?



The syntax is incorrect (the param should be V(AMP) and not AMP) but on my PC, it doesn't complain, it crashes. I'm running rev 4.19I.


Version 4 SHEET 1 880 680 WIRE 80 112 32 112 WIRE 128 112 80 112 WIRE 256 112 208 112 WIRE 304 112 256 112 WIRE 448 112 384 112 WIRE 480 112 448 112 WIRE 384 128 384 112 WIRE 32 144 32 112 WIRE 304 144 304 112 WIRE 336 144 304 144 WIRE 336 192 304 192 WIRE 304 224 304 192 WIRE 384 224 384 208 WIRE 384 224 304 224 WIRE 32 256 32 224 WIRE 304 256 304 224 FLAG 32 256 0 FLAG 256 112 OUT FLAG 80 112 IN FLAG 304 256 0 FLAG 448 112 AMP SYMBOL res 224 96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 50 SYMBOL voltage 32 128 R0 WINDOW 0 51 42 Left 2 WINDOW 123 43 75 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value2 AC 1 SYMATTR Value "" SYMBOL e 384 112 R0 WINDOW 0 50 44 Left 2 WINDOW 3 58 80 Left 2 SYMATTR InstName E1 SYMATTR Value 10 TEXT 24 32 Left 2 !.noise AMP V1 oct 10 1 1K


John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators

I have rev 4.18a and it crashes here, too.

"John Larkin" schreef in bericht news: snipped-for-privacy@4ax.com...

Seems to crash because of AMP has no load. Adding a resistor brings up the noise command syntax error. Does not really answer your question however.

petrus bitbyter

I sent in a bug report, using the link in HELP/About. About an hour later, Mike Engelhardt answered me... from Moscow! He says he'll fix it in the October release.

Now that's tech support!

John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators

Particularly considering the maintenance fee. ;)

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 hobbs at electrooptical dot net http://electrooptical.net

Engelhardt will fix LTspice so it will not crash, but will simply announce that a .NOISE analysis _requires_ a .AC analysis statement as well. RTFM >:-} ...Jim Thompson

| James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

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