The approach is good, and I doubt that the resistance can be simplified further (other than rearranging it algebraically) without plugging in actual values to reduce it to a number.JasonHathaway said:
Typically it is a good idea to get it in the form ofJasonHathaway said:
A T-network feedback resistance is a type of electrical circuit that is commonly used in amplifiers to reduce the amount of feedback that occurs between the input and output signals. It consists of three resistors arranged in a "T" shape, with one resistor connected between the input and ground, and the other two resistors connected in series between the output and ground.
A T-network feedback resistance works by creating a voltage divider between the input and output signals. This means that a portion of the output signal is fed back to the input, but it is attenuated by the resistors in the network. This reduces the amount of feedback that occurs, which can help to improve the stability and performance of the amplifier.
Reducing T-network feedback resistance is important because it can help to prevent unwanted oscillations or instability in an amplifier. If there is too much feedback, it can cause the amplifier to become unstable and produce distorted or noisy output signals. By reducing the amount of feedback, the amplifier can operate more reliably and produce cleaner output signals.
The feedback resistance in a T-network can be calculated using the formula: Rfb = R1 + (R2 * R3) / (R2 + R3). This formula takes into account the values of the resistors in the network and determines the overall feedback resistance. It is important to choose appropriate resistor values to achieve the desired amount of feedback reduction.
While T-network feedback resistance can be beneficial in reducing feedback, it can also introduce some drawbacks. One potential issue is that it can decrease the gain of the amplifier, as some of the output signal is being attenuated. Additionally, T-networks can introduce unwanted phase shifts in the circuit, which can affect the frequency response of the amplifier. These factors should be carefully considered when deciding whether to use a T-network feedback resistance in an amplifier circuit.