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The response curve generated by the Frequency Domain Simulation plots dBV against frequency. dBV can be converted to an equivalent voltage according to the formula; Voltage Level = 20log(Vo/Vi), where 0dBV = 1V, with that 1V normally an RMS voltage. Question: Is the voltage V corresponding to the dBV of your simulator's response-curve an RMS or Peak or Peak-to-Peak voltage? I ask this because I set your voltage generator model to get input signals for my op-amp circuits at 1V 1kHz sine, and I know that this input voltage is a Peak voltage, which is 1/2 the corresponding Peak-to-Peak voltage, meaning a +-1VAC 1kHz sine. Consequently, I would like to know if your simulator's dBV, where 0dBV = 1V, has that 1V as an RMS a Peak or a Peak-to-Peak voltage, |
by Kurtus
October 23, 2025 |
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In short, is the curve from the Frequency Domain Simulation with respect to RMS, Peak, or Peak-to-Peak voltage levels? |
by Kurtus
October 23, 2025 |
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Example Circuit |
by Kurtus
October 23, 2025 |
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Note: I also posted this question in the CircuitLab Support Forum. If no replies are posted in this thread, I will post their answer here. |
by Kurtus
October 23, 2025 |
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I am assuming it is an RMS value, since dBV giving a corresponding voltage level V usually gives V as an RMS value. But I want to be sure this is what the CircuitLab Frequency Domain Simulation's dBV values actually corresponds to. Does anyone out there know the specific answer? I don't want to keep assuming this is so, but would like to know for sure. |
by Kurtus
October 24, 2025 |
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I believe I can answer my own question, but would like to follow up with another one. First, I like the online calculator linked here. https://calculator.academy/db-to-voltage-calculator/ For any dB (volts) I enter, it gives corresponding dBV, dBu, dBuV, V, mV, uV, V Peak (sine), V P-P (sine), V/Vo, and P/Po. The text at that site, while giving the formulas used by their calculator, specifies that this V is an RMS value. My question now is: |
by Kurtus
October 26, 2025 |
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