| ??? 03/01/07 14:52 Read: times |
#134027 - reply to Answers... Responding to: ???'s previous message |
Kai said:
If the lower terminal of R3 is at 5V, for instance, then the upper terminal is at 7.5V, when the output of OPamp emits +10V and at -2.5V, when the output emits -10V. These different threshold voltages mean, that the cap is charged/discharged with differently high currents, resulting in an asymmetric waveform Yes. i got that. It describes Superposition theorem. Kai said:
Not exactly clear what you mean. But, the output tries to emit its maximum possible output voltage, which is about -14V typically without load and about 13.5V typically with 10kOhm load. For a load of 2kOhm the output is guaranteed to emit at least -10V. So, it can also be -11.3876543V or 12.99998765V, but that's not guaranteed. Just have a look into the datasheet.. Yes i saw the datasheet.It gives for test conditions. So if iam connecting a different load resistance value how should i calculate the output voltage(which i hope is nothing but the drop accross the load resistance)? Also, when I went through the datasheets of TL072,LF412 and LM358, for LM358 source and sink current ratings are given. But not for the other two. why is it so. what values has to be taken for TL072 and LF412? And finally, i feel to discuss few more on going through OpAmps. Would you be interested in replying me? regard's Suresh. |
