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1. Pre-Amplifier Stage (JRC4558): The JRC4558 is a dual op-amp. We'll use one of its op-amps to amplify the input signal.
2. Power Amplifier Stage (TDA2030): The TDA2030 will take the amplified signal from the JRC4558 and further amplify it to drive a load like a speaker.

• Component List:

  • Resistors: R1, R2
  • Capacitor: C1
  • Dual Op-Amp: JRC4558

• Connections:

  • Connect JRC4558 pin 4 (V-) to Ground.
  • Connect JRC4558 pin 8 (V+) to +Vcc.
  • Connect the input signal to JRC4558 pin 3 (A_+INPUT).
  • Connect R1 between JRC4558 pin 2 (A_-INPUT) and output pin 1 (A_OUTPUT).
  • Connect R2 between JRC4558 pin 2 (A_-INPUT) and Ground.
  • Connect C1 in parallel with R2.

• Component List:

  • Resistors: R3, R4, R5, R6
  • Capacitors: C2, C3, C4, C5
  • Power Amplifier IC: TDA2030
  • Speaker (Load)

• Connections:

  • Connect TDA2030 pin 3 to Ground.
  • Connect TDA2030 pin 5 to +Vcc.
  • Connect TDA2030 pin 1 to the output of the pre-amplifier (JRC4558 pin 1).
  • Use R3 and R4 to form a feedback loop from TDA2030 pin 4 (output) back to pin 2.
  • Connect R5 and R6 in parallel with C2 for stability and biasing.
  • Use C3, C4, and C5 for power supply decoupling and output coupling.
  • Connect the speaker between TDA2030 pin 4 and Ground.

1. Connect $V^-$ to JRC4558 pin 4.
2. Connect $V^+$ to JRC4558 pin 8.
3. Connect input signal to $A_{+INPUT}$.
4. Connect $A_{-INPUT}$ to R1:1, R2:1, and capacitor C1:1.
5. Connect $A_{OUTPUT}$ to TDA2030 pin 1.

1. Connect TDA2030 pin 3 to Ground.
2. Connect TDA2030 pin 5 to +Vcc.
3. Connect R3:1, R4:1, R5:1 and R6:1 in accordance with stable feedback and biasing.
4. Use capacitors C3:1, C4:1, and C5:1 for power supply decoupling and output coupling.
5. Connect the speaker between TDA2030 pin 4 and Ground.

copilot

• You're building a stereo amplifier.
• Power supply is assumed to be 9V, which is within the TDA2822's operational range (3V to 15V).
• The speakers or headphones have impedance suitable for the TDA2822 output.

• 1 x TDA2822M audio amplifier IC
• 2 x 10kΩ resistors (R1, R2: Volume control for left and right channels)
• 2 x 100kΩ resistors (R3, R4: Gain setting resistors for the amplifier stages)
• 2 x 10μF capacitors (C1, C2: Input coupling capacitors)
• 2 x 220μF capacitors (C3, C4: Output capacitors)
• 2 x 100nF capacitors (C5, C6: Power supply decoupling capacitors)
• 1 x 9V battery or power supply

1. Power Supply Connections:

   • Connect the Positive terminal of the 9V power supply to Pin 8 of the TDA2822.
   • Connect the Ground terminal of the 9V power supply to Pin 4 of the TDA2822.
   • Connect C5 and C6 across the power supply lines as close as possible to the TDA2822's power pins for decoupling.

2. Input Stage:

   • Connect R1 and R2 between the input signals (left and right channels, respectively) and Pins 6 and 5 of the TDA2822, respectively. These resistors act as volume control.
   • Connect C1's positive end to R1 and the other end to Pin 6; similarly, C2's positive end goes to R2, with its other end to Pin 5. These capacitors couple the input signals to the TDA2822's inputs.

3. Feedback and Gain Setting:

   • Connect R3 between Pin 1 and Pin 6, and R4 between Pin 7 and Pin 5. These resistors set the gain of the amplifier stages.

4. Output Stage:

   • Connect C3 from Pin 1 to the left channel output, and C4 from Pin 7 to the right channel output. These capacitors couple the amplified signals to the speakers or headphones.
   • Connect speakers or headphones between the positive outputs (after C3 and C4) and ground.

• The resistor values for R3 and R4 control the gain of the amplifier. The datasheet of the TDA2822 provides a formula for calculating gain based on these resistors' values.
• The capacitor values in the input and output stages are chosen to suit average audio frequencies but can be adjusted according to specific needs.

• After assembling the circuit, verify all connections are correct and there are no shorts.
• Start with low input volume to avoid sudden loud sounds.
• If there's no sound, check power supply connections, IC orientation, and continuity in the signal path.

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• You want to use one half of the JRC4558D for the preamp.
• Power supply is assumed to be ±9V to ±15V, typical for audio op-amp circuits.
• A simple non-inverting amplifier configuration is chosen for simplicity and because it provides a high input impedance, which is beneficial for dynamic microphones.

• R1: 2.2kΩ (Bias resistor for the microphone)
• R2: 10kΩ (Input resistor to ground, used for setting the DC bias with R1)
• R3: 1kΩ (Feedback resistor)
• R4: 10kΩ (Feedback resistor for gain setting)
• C1: 1μF (DC blocking/input coupling capacitor)
• C2: 100nF (Power supply decoupling capacitor for V+)
• C3: 100nF (Power supply decoupling capacitor for V-)
• C4: 10μF (Output coupling capacitor)

1. Power Supply and Grounding:

   • Connect V+ (P:V+ Pin 8) to the positive power supply (e.g., +9V).
   • Connect V- (P:V- Pin 4) to the negative power supply (e.g., -9V).

2. Microphone Input Stage:

   • Connect the dynamic microphone to C1:1.
   • Connect C1:2 to R1:1 and A_+INPUT (P:A_+INPUT Pin 3).
   • Connect R1:2 to R2:1 and P:V- (P:V- Pin 4).
   • Connect R2:2 to ground.

3. Gain Setting Stage:

   • Connect R3:1 to A_+INPUT (P:A_+INPUT Pin 3) and R3:2 to A_OUTPUT (P:A_OUTPUT Pin 1).
   • Connect R4:1 to A_OUTPUT (P:A_OUTPUT Pin 1) and R4:2 to ground. This configuration sets the gain of the amplifier. The gain is calculated as (1 + \frac{R4}{R3}).

4. Output Stage:

   • Connect C4:1 to A_OUTPUT (P:A_OUTPUT Pin 1).
   • Connect C4:2 to the output jack or next stage in your audio path. This capacitor blocks DC from reaching the output.

5. Power Supply Decoupling:

   • Connect C2:1 to P:V+ (P:V+ Pin 8) and C2:2 to ground.
   • Connect C3:1 to P:V- (P:V- Pin 4) and C3:2 to ground. These capacitors help filter noise from the power supply.