Questions 1. A voltage amplifier operating from ± 10V power supplies has a linear transfer characteristic passing through (0,0), but with output saturation at +7V and –9V. The amplifier gain is 50V/V. What DC operating point will result in the largest possible output signal magnitude? What is that output signal magnitude (which we sometimes call “maximum symmetric output swing”)? 2. A voltage amplifier connected to a particular source “v s ” has a no-load voltage gain of 100V/V, and the same amplifier has a gain of 70V/V when there is a 1k Ω load. What is its output resistance? 3. A voltage amplifier, when connected to a 10k Ω source has an overall gain (v o /v s )of 1667V/V. When a second, identical amplifier is connected in parallel with the first amplifier and connected to the same source, the corresponding overall gain is 909V/V. Estimate the input resistance of the amplifiers. 4. A design is required of a voltage amplifier to operate between a 1M
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