[전자공학응용실험]4주차_3차실험_실험12,13 소오스 팔로워, 공통 게이트 증폭기_예비레포트_A+

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• 1. Source follower

  소스 팔로워 회로에서는 입력이 게이트 단자에 인가되고 출력은 소스 단자에서 모니터링됩니다. 드레인 단자가 공통이므로 공통 드레인 증폭기라고 할 수 있습니다. 출력 신호가 입력 신호를 따르기 때문에 '소스 팔로워'라는 용어가 더 자주 사용됩니다.

• 2. Common gate amplifier

  공통 게이트 증폭기 회로에서는 입력이 소스 단자에 인가되고 출력은 드레인 단자에서 관찰됩니다. 게이트 단자가 공통이므로 공통 게이트 증폭기라고 합니다. 이 회로는 입력 임피던스가 높고 출력 임피던스가 낮은 특성을 가지고 있습니다.

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• 1. Source follower

  The source follower is a fundamental electronic circuit that is widely used in various electronic applications. It is a type of common-source amplifier configuration where the source terminal of the transistor is connected to the output, and the gate terminal is connected to the input. The key characteristic of the source follower is that it provides a voltage gain of less than 1, meaning that the output voltage is slightly lower than the input voltage. However, this configuration offers several advantages, such as high input impedance, low output impedance, and good isolation between the input and output stages. The source follower is commonly used as a buffer amplifier, where it is employed to drive low-impedance loads without loading the preceding stage. This makes it particularly useful in applications such as operational amplifier output stages, analog-to-digital converters, and various signal conditioning circuits. Overall, the source follower is a versatile and important circuit topology that plays a crucial role in many electronic systems.

• 2. Common gate amplifier

  The common gate amplifier is another fundamental electronic circuit configuration that is widely used in various applications. In this configuration, the input signal is applied to the gate terminal of the transistor, while the source terminal is connected to the input and the drain terminal is connected to the output. The key characteristic of the common gate amplifier is that it provides a voltage gain that is typically greater than 1, meaning that the output voltage is higher than the input voltage. Additionally, the common gate amplifier has a relatively low input impedance and a high output impedance, which makes it suitable for driving low-impedance loads. This configuration is often used in applications such as radio frequency (RF) amplifiers, current-to-voltage converters, and impedance matching circuits. The common gate amplifier is particularly useful in situations where a high input-to-output isolation is required, as the grounded source terminal effectively isolates the input and output stages. Overall, the common gate amplifier is a versatile and important circuit topology that plays a crucial role in many electronic systems, especially in high-frequency and high-power applications.