| ??? 03/05/07 14:04 Read: times |
#134287 - it's an AWFUL solution Responding to: ???'s previous message |
So converting the pwm signal to an analog signal seems to be a good solution.
it's an AWFUL solution. first you get the fact that converting pulses to voltage is a constant approximation, second you want 16 bit precision froma A/D, re that read: http://www.8052.com/faqs.phtml?FAQ=128848 If you do the following 1) use a 100MHZ SILabs f12x 2) connct a timer preset to interrupt at, say, 1000 to your pulses 3) run another timer as a timer from start to stop of the timer in 2) you will get what you want Erik |
| Topic | Author | Date |
| precision duty cycle to analog signal conversion | 01/01/70 00:00 | |
| WHY? and how | 01/01/70 00:00 | |
| 16 bits resolution | 01/01/70 00:00 | |
| Uncertainty | 01/01/70 00:00 | |
| uncertanity | 01/01/70 00:00 | |
| PWM | 01/01/70 00:00 | |
| it's an AWFUL solution | 01/01/70 00:00 | |
| Or stick with the F352... | 01/01/70 00:00 | |
| Is "F352" a 4-letter word... | 01/01/70 00:00 | |
| well, if you want to look like me ... | 01/01/70 00:00 | |
| Really? | 01/01/70 00:00 | |
What sensor? | 01/01/70 00:00 | |
| Resolution does not help you here. | 01/01/70 00:00 | |
| Analog signal is proportional | 01/01/70 00:00 | |
| you are right | 01/01/70 00:00 | |
| Simple answer | 01/01/70 00:00 | |
| true rms convertor | 01/01/70 00:00 | |
| Why RMS | 01/01/70 00:00 | |
| why rms | 01/01/70 00:00 | |
| RMS detectors suffer from high crest factors,... | 01/01/70 00:00 | |
| Why, oh why | 01/01/70 00:00 |