| ??? 08/17/05 11:04 Read: times |
#99545 - Use a true RMS meter! Responding to: ???'s previous message |
Thats seems a little obvious! If the waveform shape is always the same then you can apply a constant factor to the peak value. But if the pulse width is changing, that won't work. The solution: either sample the value with a micro and calculate the RMS (although sampling a 80KHz is a bit much) or use a rms chip like the ones from Analog Devices. This has been discussed recently in the forum. I don't think the solution is going to be magic or cheap. |
| Topic | Author | Date |
| rms value of current for induction heat | 01/01/70 00:00 | |
| Use a true RMS meter! | 01/01/70 00:00 | |
| On second thoughts.... | 01/01/70 00:00 | |
| On second thoughts.... Give third too.. | 01/01/70 00:00 | |
| Service problem! | 01/01/70 00:00 | |
| thermal effects | 01/01/70 00:00 | |
| power metering | 01/01/70 00:00 | |
| Elegant | 01/01/70 00:00 | |
| Never had a need! | 01/01/70 00:00 | |
| bulb, power, etc. | 01/01/70 00:00 | |
| Bolo-` | 01/01/70 00:00 | |
| yes I know | 01/01/70 00:00 | |
| A resistor | 01/01/70 00:00 | |
| Thermal Inertia. | 01/01/70 00:00 | |
| there is a bunch of recently relased ele | 01/01/70 00:00 | |
| all methods are for 50hz | 01/01/70 00:00 | |
| Do some research | 01/01/70 00:00 | |
| analogy | 01/01/70 00:00 | |
Hall Generator for power measuring | 01/01/70 00:00 |