Daniyal Ahmad
Jun 26
When output of non inverting amplifiers fed back to the input of inverting amplifiers then gain will be 1?? If not then give reason when it will 1?
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ChatGPT
Jun 26
No, the gain will not necessarily be 1 when the output of a non-inverting amplifier is fed back to the input of an inverting amplifier.
The gain of an amplifier circuit is determined by the feedback network and the configuration of the amplifier itself. In this case, the gain will depend on the specific values of resistors used in the feedback network of both amplifiers.
If the feedback network of the inverting amplifier is designed in such a way that it provides unity gain (i.e., the feedback resistor is equal to the input resistor), then the overall gain of the combined circuit may be close to 1. However, this is not always the case and the gain can be different from 1 depending on the resistor values used in the feedback networks of both amplifiers.
The gain of an amplifier circuit is determined by the feedback network and the configuration of the amplifier itself. In this case, the gain will depend on the specific values of resistors used in the feedback network of both amplifiers.
If the feedback network of the inverting amplifier is designed in such a way that it provides unity gain (i.e., the feedback resistor is equal to the input resistor), then the overall gain of the combined circuit may be close to 1. However, this is not always the case and the gain can be different from 1 depending on the resistor values used in the feedback networks of both amplifiers.
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Google Gemini AI
Jun 26
The statement "When output of non inverting amplifiers fed back to the input of inverting amplifiers then gain will be 1" is incorrect.
Reason:
In a non-inverting amplifier, the input signal is applied to the non-inverting terminal of the amplifier, and the output is taken from the output terminal. Therefore, the output signal is in phase with the input signal and has a gain greater than 1.
In an inverting amplifier, the input signal is applied to the inverting terminal of the amplifier, and the output is taken from the output terminal. Therefore, the output signal is 180 degrees out of phase with the input signal and has a gain less than 1.
When the output of a non-inverting amplifier is fed back to the input of an inverting amplifier, the overall gain of the circuit will not be 1. Instead, the gain will depend on the values of the resistors used in the feedback network.
The gain of the circuit can be calculated using the following formula:
```
Gain = -R2 / R1
```
where:
- R1 is the resistor connected between the output of the non-inverting amplifier and the inverting input of the inverting amplifier
- R2 is the resistor connected between the inverting input of the inverting amplifier and ground
If R1 = R2, then the gain of the circuit will be -1. This means that the output signal will be inverted and have the same amplitude as the input signal.
If R1 is not equal to R2, then the gain of the circuit will be different from -1. The gain can be positive or negative, depending on the values of R1 and R2.
Reason:
In a non-inverting amplifier, the input signal is applied to the non-inverting terminal of the amplifier, and the output is taken from the output terminal. Therefore, the output signal is in phase with the input signal and has a gain greater than 1.
In an inverting amplifier, the input signal is applied to the inverting terminal of the amplifier, and the output is taken from the output terminal. Therefore, the output signal is 180 degrees out of phase with the input signal and has a gain less than 1.
When the output of a non-inverting amplifier is fed back to the input of an inverting amplifier, the overall gain of the circuit will not be 1. Instead, the gain will depend on the values of the resistors used in the feedback network.
The gain of the circuit can be calculated using the following formula:
```
Gain = -R2 / R1
```
where:
- R1 is the resistor connected between the output of the non-inverting amplifier and the inverting input of the inverting amplifier
- R2 is the resistor connected between the inverting input of the inverting amplifier and ground
If R1 = R2, then the gain of the circuit will be -1. This means that the output signal will be inverted and have the same amplitude as the input signal.
If R1 is not equal to R2, then the gain of the circuit will be different from -1. The gain can be positive or negative, depending on the values of R1 and R2.
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