Timeline for Different LED for POWER ON and for LOAD ON, how to wire?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Mar 25, 2016 at 11:05 | history | edited | Olin Lathrop | CC BY-SA 3.0 |
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| Mar 24, 2016 at 19:43 | comment | added | scanny | @Xane - You also want to be careful you don't confuse yourself and others with imprecise language as far as "across" and "through" are concerned. A voltage difference appears "across" (or between) two nodes, never through; current goes "through" a branch. If you want the LED to light only when a load is applied (without regard to the available voltage), that's something else entirely. The condition you would want to detect is current flow; in that case you'd need to specify the threshold current for what constitutes a "load", e.g. >10mA. | |
| Mar 24, 2016 at 15:04 | comment | added | Xane | I will update the question with further info soon. | |
| Mar 24, 2016 at 13:04 | comment | added | try-catch-finally | @WhatRoughBeast: Olin could also have asked for details before. ;) I for example, would have provided an example using a shunt resistor and switing the LED using the voltage drop across the shunt caused by the load. Nevertheless the question was not clear enough initially. ;) | |
| Mar 24, 2016 at 11:45 | comment | added | WhatRoughBeast | @Xane - You need to pay more attention to Olin's point. You have not actually specified what "Have any voltage across it." For instances, Olin's circuit won't turn on the LED for an output of 0.6 volts, and the LED current will reach about 3 mA at about 2 volts. Do you care about low voltages? Is 1 volt enough to do weird things? You haven't said (and the exact numbers don't matter), so you made Olin guess. | |
| Mar 24, 2016 at 11:17 | comment | added | Xane | Thanks for the great explination, this is exactly what i was looking for. Also like i said in one comment here: "what i want is that when PR1 (wire to the far right) Have any voltage across it, i want LED2 to be turned on. When no voltage goes through it i want it to be off." | |
| Mar 24, 2016 at 11:16 | vote | accept | Xane | ||
| Mar 24, 2016 at 11:21 | |||||
| Mar 24, 2016 at 11:13 | history | answered | Olin Lathrop | CC BY-SA 3.0 |