| ??? 01/29/11 14:05 Read: times |
#180912 - peak-to-RMS relation In general Responding to: ???'s previous message |
Per Westermark said:
There is a fixed translation between peak voltage and true rms voltage as long as you have a pure sine wave. As soon as the output starts to clip, that relation fails. In general, there is a fixed relation between peak & RMS provided the wave shape is known. Here are some examples: http://en.wikipedia.org/wiki/Root..._waveforms It should be obvious that, when the waveshape changes (eg, due to clipping or any other distortion), the peak-to-RMS relation will change. This is the difference between devices that just give an RMS indication based on an assumed wave shape (usually sinusoid), and those that read true RMS |
| Topic | Author | Date |
| How to measure a clipped and non-clipped sinewave accurately | 01/01/70 00:00 | |
| peak voltages does not represent RMS if distorted curve | 01/01/70 00:00 | |
| RE: How to measure a clipped and non-clipped sinewave | 01/01/70 00:00 | |
| Still can't look at a single point in time | 01/01/70 00:00 | |
| RE: Still can't look at a single point in time | 01/01/70 00:00 | |
| peak-to-RMS relation In general | 01/01/70 00:00 | |
| I have posted this thread on some other forum | 01/01/70 00:00 | |
| Sine feedback for inverter | 01/01/70 00:00 | |
| Absolutely | 01/01/70 00:00 | |
| Re: Sine feedback for inverter | 01/01/70 00:00 | |
| hints | 01/01/70 00:00 | |
| Waveform comparison | 01/01/70 00:00 | |
| What if? | 01/01/70 00:00 | |
Drive and table | 01/01/70 00:00 | |
| Re: Waveform comparison | 01/01/70 00:00 |