Timeline for How can I increase the load capacity of this circuit?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 8, 2018 at 20:13 | comment | added | user1245 | Thanks, I set R3 to 40k and R2 to 10k and it worked. It even worked with 5V with 0.1mA constant current. In reality for such application does the type of op amp matter. I have at the moment TL272 opamp. I want to have this 0.2 or 0.1mA constant current as stiff as possible and with less noise possible. Any hint on the type of opamp for better precision(dual or single supply ect.)? | |
| Nov 8, 2018 at 19:47 | history | edited | M KS | CC BY-SA 4.0 |
change the circuit for better performance
|
| Nov 8, 2018 at 19:41 | comment | added | M KS | if you need 0.2mA, change the 5V supply with 10 volt supply(in your post), and change R1 to 10K ohm, and choose R2, R3 with solving this equation (10-10*R3/(R2+R3)) = 10k * 0.2mA | |
| Nov 8, 2018 at 19:26 | history | answered | M KS | CC BY-SA 4.0 |