What is the least resistance in this RC circuit?

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SUMMARY

The discussion centers on the relationship between resistance and charge/discharge time in RC circuits. It is established that lower resistance results in shorter charge/discharge times, specifically noting that 5RC represents the time constant for a capacitor. The conversation highlights the importance of considering both the source resistance (Rs) and the explicit resistor (R1) in conjunction with the capacitor (C1) and its equivalent series resistance (ESR1). A critical point raised is the potential for the circuit to behave predominantly like a capacitor when resistance is minimized.

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  • Understanding of RC circuit fundamentals
  • Knowledge of capacitor charge/discharge characteristics
  • Familiarity with equivalent series resistance (ESR)
  • Basic concepts of source resistance in electrical circuits
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laclry311
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least resistance in RC circuit
Hello, I know that the lower the resistance the lower the charge/discharge time in an RC circuit, i.e. 5RC is about the charge/discharge time for the capacitor. But how small is the resitstance allowed to be? I'm guessing that the lower the resistance the more the circuit looks like it has just a capacitor (bad,yes?). Is there a specifice value of what the lowest resistance could be?
 
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To answer the question well, you need to consider the source resistance as well.

Is your question about a switched-on voltage source with an output resistance Rs, in series with an explicit resistor R1 and a capacitor C1 that has and equivalent series resistance of ESR1?
 

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