Hello,
I am working through the Art of Electronics using LTSpice to design and test circuits. I am trying to recreate the Emitter follower in figure 2.6. See the screen shot below for my attempt at this circuit. The pane on the right shows Vin at 10V and Vout .7V less than Vin with Vout at ground at 0V as expected. If I return the emitter resistor to a negative supply voltage, the output should be a replica of Vin less .7V as stated by the text. The result is in the pane to the left. Vout is not a replica less .7V, instead it is much higher than Vin. Any ideas what I am doing wrong with my circuit? I have tried every way I can think of to get this to work.
Thanks
I am working through the Art of Electronics using LTSpice to design and test circuits. I am trying to recreate the Emitter follower in figure 2.6. See the screen shot below for my attempt at this circuit. The pane on the right shows Vin at 10V and Vout .7V less than Vin with Vout at ground at 0V as expected. If I return the emitter resistor to a negative supply voltage, the output should be a replica of Vin less .7V as stated by the text. The result is in the pane to the left. Vout is not a replica less .7V, instead it is much higher than Vin. Any ideas what I am doing wrong with my circuit? I have tried every way I can think of to get this to work.
Thanks
Attachments
-
179.2 KB Views: 68