<transcript><audio_12>collector current flows for 360 degrees out of the cycle in other words we have one transistor operating in linear region for 360 degrees there are other kinds of classes for example a Class B amplifier which we'll look at soon</transcript><transcript><audio_13>enough utilizes two transistors and they each flow for 180 degrees in other words one takes care of a positive half way up the other takes care of a negative half wave there's also Class D amplifiers which basically use the transistor as a switch it's either fully on or fully off</transcript><video><caption><image_14>The image shows a person's hand holding a black pen and writing on a whiteboard. The whiteboard is placed on a wooden surface and the person is holding the pen in their right hand. On the left side of the whiteboard, there is a handwritten note written in black ink that reads "Class A". The note appears to be written in a cursive font and is signed by the person's left hand. The background is dark and the focus is on the hand and the note.</caption><caption><image_15>The image shows a person's hands holding a pen and writing on a whiteboard. The whiteboard is rectangular in shape and appears to be made of wood. The person is holding the pen in their right hand and their left hand is resting on the edge of the board. On the top left corner of the image, there is a handwritten note that reads "Class A" in black ink. The note is written in a cursive font and is slightly slanted to the right. The background is dark, making the whiteboard stand out.</caption><caption><image_16>The image shows a person's hands holding a black pen and writing on a white paper. The paper appears to be a blank sheet of paper with some text written on it. The text on the paper is written in black ink and is not visible in the image. The person is holding the pen in their right hand and is writing on the left side of the paper with their left hand. The background is a plain white wall.</caption></video><transcript><audio_17>saturation or cut off those circuits are a bit more complicated they do have the advantage of much higher efficiency than Class A but Class A is a very simple sort of design it's effective for small signal or low-power modest power sorts</transcript><transcript><audio_18>of situations so our goal here is to see just how big the output signal can be we're not necessarily doing a hype our calculation here and we might be interested in and the maximum signal swing out of a small signal amplifier I still want to know how much we can get</transcript><video><caption><image_19>The image shows a person's hands holding a pair of scissors and writing on a whiteboard. The whiteboard is mounted on a wooden frame and the hands are positioned in a way that they are holding the scissors with their fingers. The person appears to be in the process of writing or drawing on the whiteboard with the scissors. There is a note written on the top left corner of the image that reads "Class A" and "Class B". The background is blurred, but it seems like the person is focused on their work.</caption><caption><image_20>The image shows a person's hands holding a pen and writing on a whiteboard. The whiteboard is attached to a wooden frame and the person is standing in front of it. The person is holding the pen in their right hand and their left hand is resting on the whiteboard with their fingers spread apart. On the left side of the image, there is a handwritten note written in black marker. The note reads "Class A" and is written in a cursive font. The background is blurred, but it appears to be a room with a wooden floor.</caption><caption><image_21>The image shows a person's hands holding a pen and writing on a whiteboard. The whiteboard is attached to a wooden frame and the person is standing in front of it. The person's fingers are visible, and they appear to be writing on the whiteboard with the pen. On the top left corner of the image, there is a note written in black ink that reads "Class A" and on the bottom right corner, there are two lines of text that read "Class B". The background is blurred, but it appears to be a room with a wooden floor.</caption></video><transcript><audio_22>out voltage wise into a following stage okay so the big downfall of this which eventually we'll see is that the Class A amplifier has a theoretical maximum</transcript> collector current flows for 360 degrees out of the cycle in other words we have one transistor operating in linear region for 360 degrees there are other kinds of classes for example a Class B amplifier which we'll look at soon enough utilizes two transistors and they each flow for 180 degrees in other words one takes care of a positive half way up the other takes care of a negative half wave there's also Class D amplifiers which basically use the transistor as a switch it's either fully on or fully off saturation or cut off those circuits are a bit more complicated they do have the advantage of much higher efficiency than Class A but Class A is a very simple sort of design it's effective for small signal or low-power modest power sorts of situations so our goal here is to see just how big the output signal can be we're not necessarily doing a hype our calculation here and we might be interested in and the maximum signal swing out of a small signal amplifier I still want to know how much we can get out voltage wise into a following stage okay so the big downfall of this which eventually we'll see is that the Class A amplifier has a theoretical maximum
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