How do I do combined verilog and spice simulations?

Started by Johann Klammer in sci.electronics.design6 years ago 4 replies

Has anybody tried this? preferrably using something free(ngspice?)...

Has anybody tried this? preferrably using something free(ngspice?)...


2 component negative feedback oscillator and voltage "multiplier"

Started by Robert Baer in sci.electronics.design2 years ago 34 replies

Problems are: Spice version does not oscillate, and Spice LED voltage is not 3V. Go buy the Dollar Tree LED Flashlight and Lantern...

Problems are: Spice version does not oscillate, and Spice LED voltage is not 3V. Go buy the Dollar Tree LED Flashlight and Lantern Combination SKU: 286458 and see (do not forget it needs one AA cell). Version 4 SHEET 1 5945676 13421556 WIRE 2080 -592 1648 -592 WIRE 2080 -560 2080 -592 WIRE 2080 -496 2048 -496 WIRE 2176 -496 2080 -496 WIRE 1648 -480 1648 -592 WIRE 2048 -448 2...


(LT SPICE ) i need hlep

Started by Tech-electro in sci.electronics.design7 years ago 1 reply

Hi my problem is hoe i can find Q-point of amplifier mosfet

Hi my problem is hoe i can find Q-point of amplifier mosfet


Spice doesn't fry parts

Started by John Larkin in sci.electronics.design3 years ago 6 replies

I'm still getting used to that. -- John Larkin Highland Technology, Inc lunatic fringe electronics

I'm still getting used to that. -- John Larkin Highland Technology, Inc lunatic fringe electronics


Phil,

Started by Anonymous in sci.electronics.design2 years ago 5 replies

Do you have a Spice model for SAV551 or something similar? -- John Larkin Highland Technology, Inc lunatic fringe...

Do you have a Spice model for SAV551 or something similar? -- John Larkin Highland Technology, Inc lunatic fringe electronics


free energy!

Started by John Larkin in sci.electronics.design4 years ago 85 replies

I have a 2N2222 in a Spice simulation that is dissipating -260 microwatts! -- John Larkin Highland Technology,...

I have a 2N2222 in a Spice simulation that is dissipating -260 microwatts! -- John Larkin Highland Technology, Inc lunatic fringe electronics


MJ11016 darlington

Started by Jean-Pierre Coulon in sci.electronics.design5 years ago 11 replies

Is there really 40 ohms between the intermadiate point and the emitter? When I do a SPICE simulation the collector current of the second...

Is there really 40 ohms between the intermadiate point and the emitter? When I do a SPICE simulation the collector current of the second transistor is terribly small. Regard, -- Jean-Pierre Coulon


LT Spice bug?

Started by John Larkin in sci.electronics.design4 years ago 15 replies

In XVII, when I have both transient and AC analyis set up, and I switch between them, the analysis parameters get tangled. Has anyone else seen...

In XVII, when I have both transient and AC analyis set up, and I switch between them, the analysis parameters get tangled. Has anyone else seen this? -- John Larkin Highland Technology, Inc lunatic fringe electronics


LT spice _ LM7812

Started by nescafe in sci.electronics.design8 years ago 12 replies

What is the substitute for LM7812 in LTspice ? I can find any...

What is the substitute for LM7812 in LTspice ? I can find any...


gigaamp current generator Winfield:-)

Started by Jan Panteltje in sci.electronics.design6 years ago 7 replies

perfect switch zero Henry wires --\------- | | === | zeo ohm resistor | | --------- perfect...

perfect switch zero Henry wires --\------- | | === | zeo ohm resistor | | --------- perfect cap charged to whatever Volts Spice it!


Anyone Use Qucs ?

Started by Anonymous in sci.electronics.design4 years ago 1 reply

Anyone have experience with it ? I got it on a sayso from someone and it is= not bothering anything but, is it anything like Spice or LTSpice ?...

Anyone have experience with it ? I got it on a sayso from someone and it is= not bothering anything but, is it anything like Spice or LTSpice ? I see i= t uses the file extension SCH instead of ASC, both of which were used by W= indows. The SCH is for some kind of scheduler which I never use and never w= ould anyway. If I don't know where I am I certainly not telling anyone else= . :-) A...


uglySpice

Started by John Larkin in sci.electronics.design5 years ago 7 replies

There ought to be some sort of IgNobel kind of prize for the ugliest LT SPice...

There ought to be some sort of IgNobel kind of prize for the ugliest LT SPice schematics. http://68.media.tumblr.com/8b12b4627d78f0393d6c4b4210d2881f/tumblr_inline_my9qmdkHr31r2bfgn.png -- John Larkin Highland Technology, Inc lunatic fringe electronics


LT spice error

Started by Anonymous in sci.electronics.design1 year ago 9 replies

On simulation, I am getting this error : trouble converting to curly brace notation: mismatched single quotes...

On simulation, I am getting this error : trouble converting to curly brace notation: mismatched single quotes in "K{(Uo*Cox/2)175.4-35.6uA/V^2" My connections are correct. What might be wrong?


Tina TI ?

Started by mkr5000 in sci.electronics.design10 years ago 26 replies

The only simulation I've ever done is with a breadboard, so I want to try out a free spice program that is well suited for a beginner and user...

The only simulation I've ever done is with a breadboard, so I want to try out a free spice program that is well suited for a beginner and user friendly. I may have found it with Tina TI ? Does it only allow the use of TI parts ? (probably ok because TI has near everything). Any other software I should look at also? thanks. I did have electronics workbench years ago but couldn't get in...


Best way to remove DC offset ?

Started by Anonymous in sci.electronics.design4 years ago 9 replies

Could some electronics guru please help ? The SPICE simulation for a 50 MHz Colpitts oscillator has a 1.5 V DC offset. What would be the best...

Could some electronics guru please help ? The SPICE simulation for a 50 MHz Colpitts oscillator has a 1.5 V DC offset. What would be the best way to filter it out ? AC coupling capacitors are not useful because of capacitive reactance. Any hints amd/or suggestions would be helpful. Thanks in advance.


LT Spice universal opamp

Started by Anonymous in sci.electronics.design2 years ago 5 replies

In universalopamp2, what does the "rail" parameter do? -- John Larkin Highland Technology, Inc The cork popped merrily,...

In universalopamp2, what does the "rail" parameter do? -- John Larkin Highland Technology, Inc The cork popped merrily, and Lord Peter rose to his feet. "Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"


.TEMP in Spice for just one component.

Started by Jamie in sci.electronics.design9 years ago 4 replies

how do I specify a different operating temperature for a specific component instead of it applying it to all? .TEMP -32 for example is for...

how do I specify a different operating temperature for a specific component instead of it applying it to all? .TEMP -32 for example is for all the components, but I would like to specify that a DIODE is at like -100 C for example, while every one else is at 38c et.. Jamie


Quote of the day

Started by Tim Wescott in sci.electronics.design7 years ago 11 replies

"Simulations are doomed to succeed" Reputed to have been coined by Dennis Bernstien at U MI. Good to throw at any beginning SPICE user (or...

"Simulations are doomed to succeed" Reputed to have been coined by Dennis Bernstien at U MI. Good to throw at any beginning SPICE user (or any beginning user of any simulation software). -- www.wescottdesign.com


LT Spice net names

Started by John Larkin in sci.electronics.design3 years ago 1 reply

You can hang two different net names on a wire and they both work. The named voltages are equivalent. They plot the same color too. --...

You can hang two different net names on a wire and they both work. The named voltages are equivalent. They plot the same color too. -- John Larkin Highland Technology, Inc lunatic fringe electronics


A tool I am working on for people like you.

Started by Jamie in sci.electronics.design10 years ago 17 replies

For those that have access to a FTP site for placing images I have a tool that I have been modifying from proprietary code that may help some...

For those that have access to a FTP site for placing images I have a tool that I have been modifying from proprietary code that may help some of us here. I find it hard at times to convey to readers that simply want to see something with out going through the pains of loading up spice, or what ever programs for a clean view of a schematic. I know many of you already know how to g...