Actually I have tried I1 in both directions and neither way works.

PNP was upside down.

 

Actually I have tried I1 in both directions and neither way works.

Here is my sim. Something is wrong.

 

Hi RRR,
One point is a -5V VCE source inverted and a .param VCE =-5v gives a +5V on the Collector.
E

 

Hi RRR,
One point is a -5V VCE source inverted and a .param VCE =-5v gives a +5V on the Collector.
E

Hi E

Sorry I don't know what you are telling me. I have tried everything that I can think of and zip.

 

Hi R.
This image shows the +V result of two -V's
E

Added 2nd image note orientation of the voltage source

 

Hi R.
This image shows the +V result of two -V's
E

I'm still lost.

 

Your param directive makes the + terminal of V1 negative and the - terminal positive. So you are connecting positive to the PNP collector.

 

Your param directive makes the + terminal of V1 negative and the - terminal positive. So you are connecting positive to the PNP collector.

And when I set the param to +5V I get negative AC gain values.

 

Hi RR,
Have not abandoned you, the that sim has screwed up my LTSpice program!

E

 

And when I set the param to +5V I get negative AC gain values.

You are performing DC analysis.
The DC plot looks ok to me.

Use AC analysis for AC gain.

 

Hi RRR,
This is what I see, using a PNP and a NPN, note the -d
E

 

Hi RRR,
This is what I see, using a PNP and a NPN, note the -d
E
View attachment 302954

Still doesn't work.

 

hi,
Look at the Sign
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