Timeline for Offset introduction Opamp
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Jun 23, 2017 at 20:40 | comment | added | DigiJockforLife | Awesome. Thank you for your response. I appreciate the help! | |
| Jun 23, 2017 at 20:14 | answer | added | Olin Lathrop | timeline score: 1 | |
| Jun 23, 2017 at 20:11 | comment | added | Glenn W9IQ | Yes, the circuit will basically work as you propose. Make sure your programmable pot on the feedback loop can handle the frequency range you need. You may be able to eliminate the separate +/- 5 volt supplies by simply changing your resistive divider scheme and power it from your +/-10 volt supply as long as your programmable pot can handle the current. | |
| Jun 23, 2017 at 19:50 | comment | added | DigiJockforLife | I'm sorry. Im a little confused. I want the output to vary by +/-5 volts upon my choosing. Is the offset input a separate pin? The opamp I picked doesn't seem to have it. Thank you for your time. | |
| Jun 23, 2017 at 19:45 | comment | added | Bimpelrekkie | Offsets are usually a couple of mV or less. There is little point in making the voltage at R1 vary from -5 to +5 V where +/- 100 mV would suffice. Also why not simply ground the opamp's + input and use the offset inputs of the opamp to compensate for offset. That's what they're for. That's what almost all circuit designers do. | |
| Jun 23, 2017 at 19:45 | history | edited | DigiJockforLife | CC BY-SA 3.0 |
added 181 characters in body
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| Jun 23, 2017 at 19:39 | history | asked | DigiJockforLife | CC BY-SA 3.0 |