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Electronics Forum / CAD / March 2005SPICE on entered schamatic(s)
Any cheap systems that does that? With (relatively) modern op-amps? > Any cheap systems that does that? > With (relatively) modern op-amps? Does WHAT? ...Jim Thompson | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. > Any cheap systems that does that? > With (relatively) modern op-amps? If you mean push a button and Spice runs on the schematic you've just created then you've been using Spice on Unix Mainframes (with text command files) too long. Most of the PC versions of Spice do that nowadays. This group has mentioned free and other versions. LTSpice does that. If this is not what I had to fire up my crystal ball to figure out what you were talking about then blame it on the cheap crystal balls nowadays. Robert >> Any cheap systems that does that? >> With (relatively) modern op-amps? [quoted text clipped - 11 lines] > > Robert I take it that LTSpice is low cost or free; lets me create a schematic and runs SPICE on the schematic. And what if the libraries do not have the op-amp you want to use? Can one use others (like the old DOS versions of SPICE does)? Could you name a few of the others; i am on POTS and downloading 10 megs or more is simply not practical. I am willing to pay for a CD (hat is how i get versions of NetScape). > Any cheap systems that does that? > With (relatively) modern op-amps? LTSpice. Download from Linear Technology. Cost: free. Is that cheap enough? Has all the latest Linear Tech opamps. You can add your own devices to the library. Mark >> Any cheap systems that does that? >> With (relatively) modern op-amps? [quoted text clipped - 5 lines] > > Mark Thanks for the info. > Any cheap systems that does that? > With (relatively) modern op-amps? It seems that Linear Technology does not have LTSpice available for download. Furthermore the only version available seems to be exclusively for switchers. > It seems that Linear Technology does not have LTSpice > available for download. Furthermore the only version available > seems to be exclusively for switchers. SwitcherCad is LTSpice, certainly aimed at their line of switcher-chips, but with more general Spice libraries and capabilities bundled in. I downloaded it with a 28k8 modem, (at British Telecom's, pay_through_the_nose connection charges), and the cost was trivial compared with the value of LTSpice. Stop wavering. Download it. You won't regret it.  SignatureTony Williams. >> Any cheap systems that does that? >> With (relatively) modern op-amps? > > It seems that Linear Technology does not have LTSpice available for > download. Furthermore the only version available seems to be exclusively > for switchers. LTSpice is just our pet name for it, it is called LTSwitcherCAD, or something like that. As I understand it, the program is funded as a marketing tool for LT's switching regulator division, but it is really an extremely full feature spice simulator with switching regulator extensions. -Chuck Chuck, >> It seems that Linear Technology does not have LTSpice >> available for download. Furthermore the only version >> available seems to be exclusively for switchers. > > LTSpice is just our pet name for it, it is called > LTSwitcherCAD, or something like that. The "official" name is LTspice/SwitcherCAD III. There was once an edict to change the name simply to LTspice, which is the name I prefer but I didn't want to lose the name recognition of "SwitcherCAD", so both LTspice and SwitcherCAD III are intended to be synonyms. BTW, the "III" did not come from the "3" in SPICE3. It was the third major piece of the sales collateral called "SwitcherCAD". Also, the preferred case is LTspice, not LTSpice. It's a trademark. I'm not interested in hearing how messy this all is -- it's what happens to get the thing funded. Maybe I should bow to an example from the music industry and change the name to some unpronounceable symbol. Then we'd have "The Simulator Formerly Known as Either LTspice or SwitcherCAD III." > As I understand it, the program is funded as a > marketing tool for LT's switching regulator division, > but it is really an extremely full feature spice > simulator with switching regulator extensions. Regards, -- Mike > Chuck, > [quoted text clipped - 5 lines] > > -- Mike I'll call it anything you like for such a low cost (free) quality tool. Thanks for your efforts. Robert |
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