Timeline for Why is this potentiometer and comparator circuit not working?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Aug 20, 2019 at 7:05 | vote | accept | gatukok | ||
| Aug 18, 2019 at 21:45 | answer | added | Peter Bennett | timeline score: 1 | |
| Aug 18, 2019 at 19:53 | comment | added | winny | Long shot: are your comparators decoupled? | |
| Aug 18, 2019 at 18:41 | history | edited | gatukok | CC BY-SA 4.0 |
added 476 characters in body
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| Aug 18, 2019 at 12:09 | comment | added | Transistor | Oldfart means that the LEDs won't work any better but the circuit will be a little more efficient if it's not sinking current when the LEDs are off. | |
| Aug 18, 2019 at 10:36 | history | edited | TonyM | CC BY-SA 4.0 |
edited title
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| Aug 18, 2019 at 9:22 | comment | added | Oldfart | I just checked: the LM2901 has an open collector output. Your LED's will work better if you move them, with the resistor, in place of R2,R3. For the rest the circuit looks OK (I did not check the full datasheet though). I would say it is time to check your connections. Or did you buy the parts from some dodgy website? | |
| Aug 18, 2019 at 9:20 | answer | added | Transistor | timeline score: 0 | |
| Aug 18, 2019 at 9:05 | review | First posts | |||
| Aug 18, 2019 at 10:16 | |||||
| Aug 18, 2019 at 9:01 | history | asked | gatukok | CC BY-SA 4.0 |