| ??? 08/19/05 09:40 Read: times |
#99688 - bulb, power, etc. Responding to: ???'s previous message |
An idea for the bulb method (please tell me if it is a complete nonsense): what about measuring the spectrum of the light rather than it's intensity? Measuring two or three points in the spectrum and evaulating their relative intensity might be perhaps enough...?
But I still think there might be a significant (significantly changing) phase difference between voltage and current so measuring the current alone might not result in precise enough measurement of the power. And, the OP mentioned he tries measuring at 20-80kHz, that's a lot different than at 50Hz, for which the majority of such devices (and chips) is deviced, or am I wrong again? Jan Waclawek |
| 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 |