RickySimcic
Newbie level 2
I'm currently working on a final project involving a Galvanic Skin Response analog circuit and I am using Orcad and pspice to troubleshoot issues with my circuit.
I am connecting a high pass filter with a cut off frequency of 0.5 hz to a low pass filter with a cut off frequency of 5 hz. I am using a Vsin source running a frequency of 2.5 hz and a voltage of 9V ac. The ground is connected in series to the source on the bottom, while the filters are connected in series on the top.
For some reason, while I am trying to run a time transient I keep receiving floating node errors after the first filter which runs in series to the second filter and then back through the ground and the source.
I have tested both filters separately and have found the amplitude of the voltage dampens correctly when non-passable frequencies are sent through the filters respectively.
I have also tried connecting a 100M and 100G resistor to the ground, floating node, and in parallel to the source to account for leakage in which none of the above worked.
Is there a way to eliminate these floating node errors while keeping the integrity of the filters created in orcad. I need to test that only a signal with frequency between 0.5 hz and 5 hz passes through both filters and exits to an amplifier.
I am connecting a high pass filter with a cut off frequency of 0.5 hz to a low pass filter with a cut off frequency of 5 hz. I am using a Vsin source running a frequency of 2.5 hz and a voltage of 9V ac. The ground is connected in series to the source on the bottom, while the filters are connected in series on the top.
For some reason, while I am trying to run a time transient I keep receiving floating node errors after the first filter which runs in series to the second filter and then back through the ground and the source.
I have tested both filters separately and have found the amplitude of the voltage dampens correctly when non-passable frequencies are sent through the filters respectively.
I have also tried connecting a 100M and 100G resistor to the ground, floating node, and in parallel to the source to account for leakage in which none of the above worked.
Is there a way to eliminate these floating node errors while keeping the integrity of the filters created in orcad. I need to test that only a signal with frequency between 0.5 hz and 5 hz passes through both filters and exits to an amplifier.