Timeline for High pitch noise when resistive heating elements turn on
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
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| Apr 28, 2021 at 18:08 | answer | added | user284206 | timeline score: 2 | |
| Apr 28, 2021 at 17:59 | comment | added | user284206 | Hi Justme, you are correct, the client confirmed he was using a UPS, when he used the regular outlet the noise was not present. | |
| Apr 28, 2021 at 15:57 | answer | added | Spehro 'speff' Pefhany | timeline score: 2 | |
| Apr 28, 2021 at 15:51 | comment | added | user284206 | Thanks for the comment and suggestion... I am not sure on the wiring before it reaches the outlet, but from the outlet is directly wired to the heatingbath, I was thinking of going back to the lab with my scope to look at the waveform coming from the outlet, but I can also ask the professor to reach out to the facilities dept and inquire how their outlets are wired and see if they are using any sort of inverter. I'll update when I get more information. Thanks! | |
| Apr 28, 2021 at 15:39 | comment | added | Justme | Is the device powered by real mains voltage, or via some equipment like UPS or inverter? | |
| Apr 28, 2021 at 15:34 | history | edited | user284206 | CC BY-SA 4.0 |
added some details
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| Apr 28, 2021 at 15:24 | history | edited | JRE | CC BY-SA 4.0 |
added 13 characters in body
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| Apr 28, 2021 at 15:22 | history | edited | Transistor | CC BY-SA 4.0 |
'kHz' not 'KHz' (kelvin-hertz).
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| Apr 28, 2021 at 15:21 | answer | added | Audioguru | timeline score: 0 | |
| Apr 28, 2021 at 15:18 | history | edited | user284206 | CC BY-SA 4.0 |
edited body
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| Apr 28, 2021 at 15:13 | review | First posts | |||
| May 2, 2021 at 17:34 | |||||
| Apr 28, 2021 at 15:09 | history | asked | user284206 | CC BY-SA 4.0 |