Applying a square wave (from 0 to 5V) on a RC circuit

AI Thread Summary
Applying a square wave from 0 to 5V on an RC circuit results in both positive and negative output values due to the capacitor's behavior. The capacitor acts as a DC blocking component, preventing the DC offset of the square wave from affecting the output. This creates a phase difference between voltage and current, leading to the observed output fluctuations. The configuration effectively allows only the AC component of the signal to pass through to the resistor. Understanding this behavior is crucial for analyzing RC circuit responses to square wave inputs.
brad sue
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Hi,
I am working with capacitor now and I have this question. I am applying a square wave (from 0 to 5V) on a RC circuit.
At the output ( at the resistor) I get a positive and negative values? why is that ?
I am suspecting the fact that the capacitor create a phase difference of -90 degree(between voltage and current)..but I cannot figure out the correct answer.
please can someone help me?
 
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The capacitor is blocking the DC component of your 0-5V square wave. The DC offset of the driving source does not matter if you couple it to the load resistor with a capacitor. The cap is referred to as a DC blocking capacitor in this configuration.
 
Thank you very much berkeman!
 
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