I have designed a single stage CE voltage amplifier. The emitter resistor is totally
bypassed due to the high voltage gain requirement of 80. According to my
calculations, the maximum ac output voltage should be 2.95 peak. All of this is
based on my Heathkit Transistor design course guidelines for CE design.
Using LTSpice, there is no way that I can obtain an output of that magnitude when
I run a simulation.
Also, when I design a CE with an emitter bypass capacitor (either full or
partial bypass) the calculated value using, CE = 3.18 / (f1 * RE) always
results in a value that causes a lot of distortion. If a calculated value ends up
being 16uF, I end up having to use perhaps 500uF.
Thoughts?
David
bypassed due to the high voltage gain requirement of 80. According to my
calculations, the maximum ac output voltage should be 2.95 peak. All of this is
based on my Heathkit Transistor design course guidelines for CE design.
Using LTSpice, there is no way that I can obtain an output of that magnitude when
I run a simulation.
Also, when I design a CE with an emitter bypass capacitor (either full or
partial bypass) the calculated value using, CE = 3.18 / (f1 * RE) always
results in a value that causes a lot of distortion. If a calculated value ends up
being 16uF, I end up having to use perhaps 500uF.
Thoughts?
David
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