| ??? 05/18/10 08:32 Read: times |
#175994 - Similar but different Responding to: ???'s previous message |
Most modern resistors are remarkably good. The biggest factor influencing resistance is usually temperature, and for stability you will be looking at parts with a small ppm/C specification. It's important to remember that the important temperature is the component temperature, not the ambient temperature. As resistors usually dissipate power, they run at some temperature above ambient, and the designer may be able to reduce drift by specifying a 'bigger' resistor that runs cooler.
A good way to learn about these things is to look at a selection of data sheets and try to figure out why some of the parameters are on there. In general, it's there because some engineers need to know about it. |
| Topic | Author | Date |
| Drifting in electronic components | 01/01/70 00:00 | |
| 100mV is 2% | 01/01/70 00:00 | |
| Educative | 01/01/70 00:00 | |
| Component modelling | 01/01/70 00:00 | |
| Modelling | 01/01/70 00:00 | |
| Quantitive modelling | 01/01/70 00:00 | |
| For resistors? | 01/01/70 00:00 | |
| I think you are getting the wrong idea | 01/01/70 00:00 | |
| Similar but different | 01/01/70 00:00 | |
| Distinguish "drift" from short-term changes | 01/01/70 00:00 | |
| Trying not to be pedantic | 01/01/70 00:00 | |
Drift is any change from the intial value | 01/01/70 00:00 | |
| How actually measured? | 01/01/70 00:00 | |
| An example only | 01/01/70 00:00 | |
| No general answer... | 01/01/70 00:00 | |
| Ratiometric techniques; Calibration | 01/01/70 00:00 |