Test Circuit to Extract the Pole of an Optocoupler Model

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This simple circuit shows how to locate the pole of the optocoupler model, calculating the pole added by the capacitor Cpole= 1/(6.28*Fp*Rpullup), where Fp is the bandwidth of the collector voltage. In this SPICE simulation Cpole is 2.2nF and Fp is 3500hz.

  • Free
  • Simple
  • <10
  • Micro-cap
  • 10+
  • No
  • AC analysis -3db at 3500hz


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