Timeline for Isolated voltage measurement with an ACS37800
Current License: CC BY-SA 4.0
16 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 26 at 10:02 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Oct 28, 2023 at 5:02 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jun 20, 2023 at 2:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Feb 19, 2023 at 2:07 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Oct 20, 2022 at 19:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Oct 28, 2021 at 20:36 | comment | added | Transistor | "It happens to be a PWM based output of a TRIAC. ... As I vary the duty cycle of my TRIAC (one second period,) ..." We don't call what you're doing "PWM". Your period is too slow and the output isn't a pulse - it's multiple AC mains cycles and all of them complete cycles as you have mentioned in the comments below that it's a zero-cross opto-isolator (but the schematic doesn't show that). "Time-proportional control" would be a better term. The technique is commonly used in industrial heating controllers. Your naming this as PWM is what has caused confusion in your readers. | |
| Oct 28, 2021 at 19:41 | answer | added | uglyoldbob | timeline score: 1 | |
| Oct 28, 2021 at 16:08 | comment | added | Marko Buršič | The device is not galvanically isolated from measured source, so you have to use isolation if you want to connect it to PC with mains directly connected. | |
| Oct 28, 2021 at 15:53 | answer | added | Marko Buršič | timeline score: 0 | |
| Oct 28, 2021 at 15:45 | history | edited | uglyoldbob | CC BY-SA 4.0 |
Add one output example
|
| Oct 28, 2021 at 13:22 | comment | added | uglyoldbob | I added a better overall schematic. The pwm is through an optoisolator, it is definitely possible. | |
| Oct 28, 2021 at 13:06 | history | edited | JRE | CC BY-SA 4.0 |
added 122 characters in body; edited title
|
| Oct 28, 2021 at 12:26 | history | edited | uglyoldbob | CC BY-SA 4.0 |
Add better schematic
|
| Oct 28, 2021 at 7:41 | review | Close votes | |||
| Nov 13, 2021 at 3:02 | |||||
| Oct 28, 2021 at 6:15 | comment | added | Marko Buršič | 1st) Triac can't be driven with PWM signal. 2nd) It is not clear where do you put those transformers, post a schematics. 3rd) This device is supposed to measure voltage without any transformer. 4th) Upload some scope traces, schematics for better understanding. | |
| Oct 27, 2021 at 19:07 | history | asked | uglyoldbob | CC BY-SA 4.0 |