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--- notes:c4eng:fall2022:projects:sss0 [2022/10/01 22:32] – [BACKGROUND] ilaface
+++ notes:c4eng:fall2022:projects:sss0 [2022/10/04 13:34] (current) – [PARTS] lbrant2
@@ Line 1: / Line 1: @@
 =====BACKGROUND=====
-For this project,
+For this project, we will be experimenting with sound to create a song. In this project we will learn what an active and passive buzzer is. An active buzzer has a built in oscillator to generate sound by itself with a DC (direct current) power supply. A passive buzzer does not have a built in oscillator to generate sound, instead it needs an AC (alternating current) audio signal to generate sound. In this project, we will be using a passive buzzer to create the sound that will be used to play the song we create.
 ====ARRAYS====
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 {{:notes:c4eng:fall2022:projects:buzzerparts.png|}}
+A Passive buzzer is also known as Transducer, it uses AC power that is driven through an onboard circuit. The frequency is dependent on the input square wave signal, as it changes so does the frequency, hence offering more variance in its usage.
+Transistors are electronic components that are used in circuits for either amplifying or switching electrical signals or power and allowing them to be used in a large array of electronic devices. A transistor has two PN diodes combined back to back. Also, it has three terminals named emitter, base, and collector. The fundamental idea and physical law behind a transistor are that it should let you control the flow of current over one channel by varying the intensity of a much smaller current flowing through another channel.
 =====CIRCUIT=====
 {{:notes:c4eng:fall2022:projects:buzzercircuit.png|}}

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