Timeline for How does this circuit work (OpenTherm)?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 11, 2019 at 12:59 | comment | added | Dorian | "IN" can be low that's why D7 is there, to keep a minimum voltage for the current translator to work | |
| Nov 11, 2019 at 12:56 | history | edited | Dorian | CC BY-SA 4.0 |
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| Nov 11, 2019 at 12:55 | comment | added | Dorian | All yes. Some minimum current is needed to work | |
| Nov 11, 2019 at 12:13 | comment | added | rustyx | By q2 you mean Q1? Does it mean Q1 needs to be "open" for current sensing to work? In that case the voltage has to be above 15V (to go through D6) or "IN" needs to remain high, correct? | |
| Nov 11, 2019 at 11:38 | history | answered | Dorian | CC BY-SA 4.0 |