Adding SPICE definitions to Microcap demo

antomas · 19th June 2005, 10:44 AM

Hi everybody!
I'd like to add this SPICE definition of a 2sK170 JFet to Microcap Demo. I fiddled for a while with the component editor, but I couldn't find the way. Is there any Microcap expert willing to help?
Thanks very much in the anticipation,
Massimo

soongsc · 19th June 2005, 11:28 AM

Found another definition on the web.

.model J2sk170 NJF(Beta=59.86m Rs=4.151 Rd=4.151 Betatce=-.5 Lambda=1.923m
+ Vto=-.5024 Vtotc=-2.5m Cgd=20p M=.3805 Pb=.4746 Fc=.5
+ Cgs=25.48p Isr=84.77p Nr=2 Is=8.477p N=1 Xti=3 Alpha=10u Vk=100
+ Kf=111.3E-18 Af=1)

I think you just create a separate model file, import it as a parts library, then add a symbol definition. Is that part of Microsim? Didn't know they were around anymore.

antomas · 19th June 2005, 01:28 PM

Hi soongsc,
thanks for your answer. I use (I'd like to use) Microcap, not Microsim. In case, would you please detail where to find the commands you mentioned, how to create a model file and so on?
Thanks very much,
Massimo

Netlist · 19th June 2005, 03:37 PM

Here's a guideline from MC6. Don't know if you can add models in the demo version though.

/Hugo

jackinnj · 19th June 2005, 03:41 PM

google "spice directives"

19th June 2005, 10:44 AM	#1
antomas Maître sans marteau diyAudio Member Join Date: Feb 2003 Location: Torino, Italy	Adding SPICE definitions to Microcap demo Hi everybody! I'd like to add this SPICE definition of a 2sK170 JFet to Microcap Demo. I fiddled for a while with the component editor, but I couldn't find the way. Is there any Microcap expert willing to help? Thanks very much in the anticipation, Massimo

19th June 2005, 11:28 AM	#2
soongsc diyAudio Member Join Date: Mar 2005 Location: Taiwan	Found another definition on the web. .model J2sk170 NJF(Beta=59.86m Rs=4.151 Rd=4.151 Betatce=-.5 Lambda=1.923m + Vto=-.5024 Vtotc=-2.5m Cgd=20p M=.3805 Pb=.4746 Fc=.5 + Cgs=25.48p Isr=84.77p Nr=2 Is=8.477p N=1 Xti=3 Alpha=10u Vk=100 + Kf=111.3E-18 Af=1) I think you just create a separate model file, import it as a parts library, then add a symbol definition. Is that part of Microsim? Didn't know they were around anymore. __________________ Hear the real thing!

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19th June 2005, 01:28 PM	#3
antomas Maître sans marteau diyAudio Member Join Date: Feb 2003 Location: Torino, Italy	Hi soongsc, thanks for your answer. I use (I'd like to use) Microcap, not Microsim. In case, would you please detail where to find the commands you mentioned, how to create a model file and so on? Thanks very much, Massimo

19th June 2005, 03:37 PM	#4
Netlist diyAudio Moderator Join Date: Jan 2003	Here's a guideline from MC6. Don't know if you can add models in the demo version though. /Hugo

19th June 2005, 03:41 PM	#5
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	google "spice directives"

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