29. Find Rin(emitter)» Ay, A¡, and A, for the unloaded amplifier in Figure 6–57. IGURE 6-57 C3 Bac = 200 OV out 10 μF RE 620 N 10 μF RC 1.2 kN R2 R1 Vcc +24 V 10 k. 22 kN 10 uF
29. Find Rin(emitter)» Ay, A¡, and A, for the unloaded amplifier in Figure 6–57. IGURE 6-57 C3 Bac = 200 OV out 10 μF RE 620 N 10 μF RC 1.2 kN R2 R1 Vcc +24 V 10 k. 22 kN 10 uF
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Transcribed Image Text:### Problem Statement
**29.** Find \( R_{in(emitter)} \), \( A_v \), \( A_i \), and \( A_p \) for the unloaded amplifier in Figure 6-57.
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### Figure 6-57 Explanation
The schematic in Figure 6-57 illustrates an unloaded amplifier configuration with the following components:
- **Transistor**: Represented by the standard symbol with a current gain (\( \beta_{ac} \)) of 200.
- **Input Capacitor \( C_1 \)**: 10 µF, connected at the input \( V_{in} \).
- **Emitter Resistor \( R_E \)**: 620 Ω, linked to the transistor's emitter.
- **Resistors \( R_2 \) and \( R_1 \)**: 10 kΩ and 22 kΩ respectively, forming part of the biasing network.
- **Output Capacitor \( C_3 \)**: 10 µF, connected at the output \( V_{out} \).
- **Collector Resistor \( R_C \)**: 1.2 kΩ, situated on the collector side of the transistor.
- **Power Supply \( V_{CC} \)**: +24 V, supplies the necessary voltage to the circuit.
- **Capacitor \( C_2 \)**: 10 µF, used for coupling or bypassing purposes.
### Circuit Functionality
This is a typical common-emitter amplifier circuit which amplifies the input voltage \( V_{in} \) to provide an amplified output voltage \( V_{out} \). The capacitors \( C_1 \), \( C_2 \), and \( C_3 \) are typically used to block DC components while allowing AC signals to pass.
### Parameters to Calculate
1. **\( R_{in(emitter)} \)**: The input resistance seen at the emitter.
2. **\( A_v \) (Voltage Gain)**: The ratio of the output voltage variation to the input voltage variation.
3. **\( A_i \) (Current Gain)**: The ratio of the output current to the input current.
4. **\( A_p \) (Power Gain)**: The product of the voltage gain and the current gain, representing the conversion of input power to output power.
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