| ??? 08/22/10 21:47 Read: times |
#178228 - GIGO indeed Responding to: ???'s previous message |
M Chitrakar said:
[...] the input opamp is basically in an open loop configuration [...] Nope, it isn't! Feedback comes from the transistor between pins 3 and 4 of the opto device. In the appnote, this is detailed in the text above the diagram you posted. Rob. |
| Topic | Author | Date |
| Wrong concept yields wrong simulation? | 01/01/70 00:00 | |
| GIGO indeed | 01/01/70 00:00 | |
| COntrol loop | 01/01/70 00:00 | |
| Simulation circuit | 01/01/70 00:00 | |
| Bias needed | 01/01/70 00:00 | |
| OP07... | 01/01/70 00:00 | |
| It's a correct feedback loop | 01/01/70 00:00 | |
| Biasing and dual supply for opamp | 01/01/70 00:00 | |
| Find out Why.. | 01/01/70 00:00 | |
| Not required | 01/01/70 00:00 | |
Drop of photodiode? | 01/01/70 00:00 | |
| You don't need the additional parts | 01/01/70 00:00 |