ECT 2440 Final: Dependent Sources (cont.)
Document Summary
Dependent sources provide a convenient means of: converting between voltage and current, changing resistance. Since dependent sources often appear in the part of the circuit that we are using to make a measurement, they also enable the input and output characteristics of a device to be optimized separately. Look at the amplifier circuit shown on figure 1. The circuit at the far left is a thevenin equivalent of a voltage source. So this can stand in place of any voltage source regardless of the actual complexity of the physical source. The resistor rin is used to measure the voltage vin that is provided by this source. Rin is the basis of a voltage measurement we desire that rin>>rs. This is a general design criterion that we have seen before. The circuit at the right is a thevenin equivalent voltage source driving a load. Here the good design characteristics require that rout<
