Yep you're right about the DC gain being 1/16, that was my mistake typing it there. And I plotted from 20Hz.vk6kro said:
Actually this is my issue. I get the same Magnitude Bode Plot, yet what I don't understand is: why is my input amplitude being attenuated so much? I've set the amplitude at 20Vp, and according to the oscilliscope I include in the circuit, the output is in the mV range?! Isn't it supposed to be that with Low Pass Filter circuits, low frequency input signals are easily passed through as opposed to high frequency signals?gnurf said:
chebyshevF said:I'm trying to design a low pass filter from a transfer function (with one pole and one zero), and according to my textbook, the circuit which represents such a transfer function is of the following kind:
DC gain is 16.
Yet I get complete attenuation for low frequencies? Could my component values be wrong?
There are several reasons why a circuit may not be behaving like a low pass filter. One common reason is that the components used in the circuit, such as capacitors and resistors, may not have the correct values or may not be connected correctly. Another possibility is that there may be unwanted resistance or capacitance in the circuit due to poor soldering or damaged components. Additionally, external interference or noise can affect the performance of the filter. It is important to carefully check all components and connections to ensure that they are functioning properly.
Yes, the power supply can have a significant impact on the behavior of a low pass filter circuit. If the power supply is not stable or has high levels of noise, it can affect the output of the filter. It is important to use a stable and clean power source for the circuit to function properly.
The cutoff frequency of a low pass filter can be calculated using the formula f = 1 / (2πRC), where f is the cutoff frequency, R is the resistance value, and C is the capacitance value. Alternatively, you can use a function generator and oscilloscope to measure the frequency response of the circuit and determine the cutoff frequency from the resulting graph.
Distorted output from a low pass filter circuit can be caused by a number of factors. One possibility is that the input signal is too strong, causing the output to clip and distort. Another common cause is that the filter components are not suited for the desired frequency range, resulting in phase shifts and distortion. Carefully selecting appropriate components and adjusting input signal levels can help reduce distortion in the output.
Yes, the placement of components in a low pass filter circuit can have an impact on its performance. For example, if capacitors are placed too far away from the active components, they may introduce unwanted resistance and inductance, affecting the filter's behavior. It is important to follow proper circuit layout and keep components close together to minimize these effects.