LT Spice opamp a liittle weird

On Mon, 01 May 2017 18:12:28 -0700, John Larkin
<jjlarkin@highland_snip_technology.com> wrote:

>
>
>
>I was wondering about the power dissipation of an opamp, driving a
>sine wave into a mainly inductive load. See below.
>
>The first few cycles current limit or something. I'm using
>UniversalOpamp2 with current limit 2 amps and rail=0.
>
>This opamp isn't documented in the HELP, or much anywhere else.
>
>Peak current is under 700 mA, so why is it clipping?
>
>Higher supply voltage helps.
>
>
[snip]

Try "Op-Amp-Config.zip" on the Device Models & Subcircuits Page of my
website... _everything_  specifiable _except_ current limit.

More highly refined models available for a fee >:-}
		
                                        ...Jim Thompson
-- 
| James E.Thompson                                 |    mens     |
| Analog Innovations                               |     et      |
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
| STV, Queen Creek, AZ 85142    Skype: skypeanalog |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |

     Thinking outside the box... producing elegant solutions.

"It is not in doing what you like, but in liking what you do that
is the secret of happiness."  -James Barrie

John Larkin <jjlarkin@highlandtechnology.com> wrote:

> On Wed, 3 May 2017 14:14:35 -0000 (UTC), Don Kuenz <g@crcomp.net>
> wrote:

>>Helmut Sennewald, the LTSpice yahoo group guru, recently posted:
>>
>>-----------------------------------------------------------------------
-

>>The UniversalOpamps2 from LTspice cannot be used for high current
>>applications without a modification. I have reduced Ron in its
>>switch-model from 10Ohm to 1Ohm.

>>Right-mouse-click on the placed symbol to lower "Switch_Ron" to get 
even
>>more current. 
 
> The current model doesn't include a visible Switch_Ron parameter. I
> added one and it didn't complain, but it seemed to have no effect.
 
>>You can download an example which I made 2012.

>>UniversalOpamps2power_test.zip
>>https://groups.yahoo.com/neo/groups/LTspice/files/%20Lib/ 
 
> I'm not registered with Yahoo.

Here's a non-Yahoo link to Helmut's modified UniversalOpamps2:

https://drive.google.com/open?id=0Bw2W6KGPX7fgbjRObEQwTHNtQzA

I haven't tested it yet but I trust Helmut's work.