An amplifier circuit shown in the figure that follows is powered by a ±12V dual- polarity voltage power supply. Find all currents I1, I2, I3, I4, I5 flowing in the circuit. Express all your results in mA, keep 3 significant digits. Vin= 0.1 V Figure 6 Vin Vout R=100 N R2=9 kN + R,=1 kN comm +

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How do I find the currents?

**Title:** Analyzing Currents in an Amplifier Circuit

**Description:**

This educational section focuses on analyzing an amplifier circuit powered by a ±12V dual-polarity voltage power supply. Our goal is to find all currents \( I_1, I_2, I_3, I_4, I_5 \) flowing in the circuit. The input voltage \( V_{\text{in}} \) is given as 0.1 V. Results should be expressed in milliamperes (mA) with three significant digits.

**Figure 6: Circuit Diagram Explanation**

The circuit diagram includes:

- **Operational Amplifier:** The amplifier has both inverting (-) and non-inverting (+) terminals. The input voltage \( V_{\text{in}} \) is applied to the non-inverting terminal.
  
- **Resistors:**
  - \( R_1 = 1 \, \text{k}\Omega \) connected in series with the inverting terminal.
  - \( R_2 = 9 \, \text{k}\Omega \) connected in the feedback loop between the output and inverting terminal.
  - \( R_L = 100 \, \Omega \) acting as a load resistor at the output.

- **Power Supply:** Two voltage sources are shown, providing a dual polarity supply (+12V and -12V).

- **Current Flows:**
  - \( I_1 \) flows downward through \( R_1 \).
  - \( I_2 \) flows downward through \( R_L \).
  - \( I_3 \) flows upward through the positive voltage supply.
  - \( I_4 \) and \( I_5 \) flow horizontally through connections associated with the power supply.

The currents are marked with arrows indicating their directions. Understanding the relationships between these elements is crucial for solving current values using circuit analysis methods.
Transcribed Image Text:**Title:** Analyzing Currents in an Amplifier Circuit **Description:** This educational section focuses on analyzing an amplifier circuit powered by a ±12V dual-polarity voltage power supply. Our goal is to find all currents \( I_1, I_2, I_3, I_4, I_5 \) flowing in the circuit. The input voltage \( V_{\text{in}} \) is given as 0.1 V. Results should be expressed in milliamperes (mA) with three significant digits. **Figure 6: Circuit Diagram Explanation** The circuit diagram includes: - **Operational Amplifier:** The amplifier has both inverting (-) and non-inverting (+) terminals. The input voltage \( V_{\text{in}} \) is applied to the non-inverting terminal. - **Resistors:** - \( R_1 = 1 \, \text{k}\Omega \) connected in series with the inverting terminal. - \( R_2 = 9 \, \text{k}\Omega \) connected in the feedback loop between the output and inverting terminal. - \( R_L = 100 \, \Omega \) acting as a load resistor at the output. - **Power Supply:** Two voltage sources are shown, providing a dual polarity supply (+12V and -12V). - **Current Flows:** - \( I_1 \) flows downward through \( R_1 \). - \( I_2 \) flows downward through \( R_L \). - \( I_3 \) flows upward through the positive voltage supply. - \( I_4 \) and \( I_5 \) flow horizontally through connections associated with the power supply. The currents are marked with arrows indicating their directions. Understanding the relationships between these elements is crucial for solving current values using circuit analysis methods.
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