| ??? 08/24/10 05:31 Read: times |
#178262 - Find out Why.. Responding to: ???'s previous message |
M
Can you clarify why you added the diode in series with the OptoCoupler LEDs? Also the simulation with two opto LEDs in series will give somewhat different results in an actual circuit where the Clare part has only one LED. These LEDs drop on the order of 2.2->2.7 volts each and so the output of the input OpAmp will be operating at quite a different offset than it would be in an actual circuit. BTW - I sent an email off to Clare to see if they would provide an actual Spice model for the LOC110/111/112 part. Michael Karas |
| 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 |