Timeline for 12V volts being reduced through a PN2222
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 25, 2017 at 14:19 | comment | added | Brian | Yes, I did edit. I noticed I mis-labelled the transistor and power supply in my diagram. I did have the power supply for the fan and the ESP8266 grounded. Apologies for my green schematic drawing skills. :-/ So updating my circuit to look more like this one, if I place my DMM where the fan should be, so see the effects of the circuit with the GPIO pin going high and low, it loos better on the high. I get the full 18V. When I set the GPIO low however the DMM still reads 10V across where the fan would be. | |
| Dec 25, 2017 at 0:22 | comment | added | Passerby | Stealth edits. Minor edits between 5 minutes or so are rolled into the original. So that you don't get like 8 edit histories of a few characters. | |
| Dec 24, 2017 at 21:49 | comment | added | Wesley Lee | It was edited, I saw the original version too. | |
| Dec 24, 2017 at 21:33 | comment | added | pipe | Yeah, I can't see an edit history. Maybe it doesn't show as an edit if you edit it within a certain time after posting. | |
| Dec 24, 2017 at 21:32 | comment | added | Spehro 'speff' Pefhany | Actually it was edited- I don't know why it is not showing up! It changed between edits on mine. | |
| Dec 24, 2017 at 21:31 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 3.0 |
added 211 characters in body
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| Dec 24, 2017 at 21:31 | comment | added | pipe | Huh. His question has never been edited and his transistor is most definitely a 2N2222 named Q1, with V1 as a voltage source. 2N3904 is never mentioned in the question or title. | |
| Dec 24, 2017 at 21:29 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 3.0 |