<transcript><audio_47>still be endpoints on here we would still have right over here and I see sat like we used to have for the DC and there would of course be a cut-off</transcript><transcript><audio_48>voltage and a VC eave cutoff at this end point okay well our goal is going to be to find out you know what those particular values happen to be because here's what's going to happen as the input signal swings positive negative the</transcript><transcript><audio_49>instantaneous operating point is swinging along this blue line at swinging along our AC load line so it swings up to a peak swings down to a peak and back and forth as the input</transcript><caption><image_50>The image shows a hand holding a blue pen and writing on a whiteboard. The whiteboard is attached to a wooden frame and the hand is positioned in front of it. On the whiteboard, there is a diagram of an AC load line, which is a type of circuit that is used to measure the voltage of a circuit. The diagram is written in black marker and shows the current and voltage levels of the circuit. 

There are also several other diagrams and equations written on the board, including a class A, a class B, and a class C. The equations are written in blue marker and appear to be related to the circuit design.

The image appears to be taken in a classroom or workshop setting, as there are desks and chairs visible in the background.</caption><transcript><audio_51>signals goes okay now ultimately these things the IC set and the VCE cutoff are going to determine just how large of an output signal swing we can arrive at so how do I come up with values at least an</transcript><transcript><audio_52>expression for those two end points well we come over here to our little simplified circuit and what we would know is that at the quiescent point there would be a voltage sitting across</transcript><transcript><audio_53>this transistor which is V CEQ and there would be a current flowing through here which is IC q okay so as far as IC set is concerned as far as this value up</transcript><video><caption><image_54>The image is a whiteboard with a diagram drawn on it. The diagram appears to be a circuit diagram with various components and equations written on it in black ink. The components are arranged in a grid-like pattern, with each component represented by a different color.

The first component is labeled "AC Load Line" and is drawn in a simple, hand-drawn style. It is a rectangular shape with a curved top and a straight bottom. The top part of the diagram is labeled with the letters "AC" and "L" in blue ink. Below the diagram, there is a line graph that shows the current and voltage levels of the AC load line. The graph is divided into two sections, with the top section showing the current level and the bottom section showing a voltage level. 

There are also several other components drawn on the whiteboard, including a capacitor, a resistor, and a capacitor. The capacitor is connected to the capacitor with a series of wires and connectors. The resistor is also connected to a voltage source, which is labeled as "Voltage" and the capacitor has a voltage of 1.5V. The voltage source is labeled at the top of the graph.
- The diagram also includes a legend that explains</caption><caption><image_55>The image shows a hand holding a black marker and writing on a whiteboard. The whiteboard is attached to a wooden wall and the hand is positioned in front of it. On the left side of the whiteboard, there is a diagram drawn in black ink. The diagram appears to be a circuit diagram with various components such as resistors, capacitors, and transistors. The components are labeled with their names and are arranged in a grid-like pattern.

At the top of the diagram, there are two lines, one labeled "AC Load Line" and the other labeled "Class A". Below the lines, there appears to represent the AC Load Line, which is a type of electrical circuit that is used to measure the voltage and current in a circuit. The AC Load line is represented by a curved line, while the Class A line is shown by a straight line, representing the current in the circuit.</caption></video> still be endpoints on here we would still have right over here and I see sat like we used to have for the DC and there would of course be a cut-off voltage and a VC eave cutoff at this end point okay well our goal is going to be to find out you know what those particular values happen to be because here's what's going to happen as the input signal swings positive negative the instantaneous operating point is swinging along this blue line at swinging along our AC load line so it swings up to a peak swings down to a peak and back and forth as the input signals goes okay now ultimately these things the IC set and the VCE cutoff are going to determine just how large of an output signal swing we can arrive at so how do I come up with values at least an expression for those two end points well we come over here to our little simplified circuit and what we would know is that at the quiescent point there would be a voltage sitting across this transistor which is V CEQ and there would be a current flowing through here which is IC q okay so as far as IC set is concerned as far as this value up
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