Timeline for BJT Constant Current, Resistor Equations
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 18, 2018 at 21:33 | vote | accept | TFD_Jon | ||
| Jul 18, 2018 at 21:32 | vote | accept | TFD_Jon | ||
| Jul 18, 2018 at 21:33 | |||||
| Jul 18, 2018 at 21:32 | vote | accept | TFD_Jon | ||
| Jul 18, 2018 at 21:32 | |||||
| Jul 17, 2018 at 18:56 | comment | added | jonk | You have enough answers, I think, and I doubt more will be added. If any of them qualify as "an answer" to you, you should probably select it. You will get pts for that, as well. But it's a good idea to close the question if you feel it is closed. | |
| Jul 7, 2018 at 3:12 | history | edited | TFD_Jon | CC BY-SA 4.0 |
edited body
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| Jul 7, 2018 at 2:26 | comment | added | TFD_Jon | Elliot, I shouldn't have put 'precise' in my description. I'm really only looking for +/- 10% or so. I understand variation on Vbe (esp with temperature) and MCU's output level variations are going to cause a large amount of error. When V+ is floating nothing needs to happen...I just want to keep base current in control. | |
| Jul 6, 2018 at 10:55 | answer | added | Olin Lathrop | timeline score: 1 | |
| Jul 6, 2018 at 4:33 | answer | added | jonk | timeline score: 2 | |
| Jul 6, 2018 at 4:23 | answer | added | User323693 | timeline score: 0 | |
| Jul 6, 2018 at 3:00 | answer | added | user105652 | timeline score: 1 | |
| Jul 6, 2018 at 1:56 | answer | added | vicatcu | timeline score: 0 | |
| Jul 6, 2018 at 1:53 | comment | added | Elliot Alderson | What tolerance do you need on the 150mA current? A circuit like this will not offer precise control. What should happen when V+ is floating or grounded? | |
| Jul 6, 2018 at 1:51 | review | First posts | |||
| Jul 6, 2018 at 2:46 | |||||
| Jul 6, 2018 at 1:48 | history | asked | TFD_Jon | CC BY-SA 4.0 |