| ??? 10/31/06 17:36 Read: times |
#127143 - Take care! Responding to: ???'s previous message |
Take care, David, in the link of microchip there seems to be a heavy mistake: C2 and C6 must not be connected from inverting input to ground. This would cause a nearly infinite gain at high frequencies, which would make the OPamp to oscillate! I don't know the used OPamp in this circuit, but a standard OPamp would heavily oscillate!!
I guess, that C2 and C6 should be connected to the output of involved OPamp rather than to GND. This would form a symmetrical amplifier with limited bandwidth, right what would be needed here. Kai |
| Topic | Author | Date |
| Anyone know of 0v - +15v IIC ADC? | 01/01/70 00:00 | |
| an op amp will do nicely | 01/01/70 00:00 | |
| how so? | 01/01/70 00:00 | |
| Two temp sensors enough? | 01/01/70 00:00 | |
| probably | 01/01/70 00:00 | |
| Link | 01/01/70 00:00 | |
| interesting | 01/01/70 00:00 | |
| Tradeoffs | 01/01/70 00:00 | |
| re: tradeoffs | 01/01/70 00:00 | |
| tradeoffs | 01/01/70 00:00 | |
| Where would you mount them? | 01/01/70 00:00 | |
| Where are they mounted | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| Is that True | 01/01/70 00:00 | |
| Three thermocouples, actually | 01/01/70 00:00 | |
| final solution? | 01/01/70 00:00 | |
| Take care! | 01/01/70 00:00 | |
| good catch! | 01/01/70 00:00 | |
Curing caps... | 01/01/70 00:00 |