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So I've recently purchased the apc back-ups 2200va (schuko version if that matters) and at night (It's in my room) It gets really annoying. It's probably coil whine and I believe there's nothing I can do about it. I have thought of something though. I have a Tapo 100 smart plug which is rated for 2300W and I know you're supposed to connect a ups directly in the outlet and not to a surge protector or something and it has to be plugged 24/7 for the buttery but I really have no other choice here. What do I do?

(Current build):

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  • MOBO: Asus ROG Strix X570-E Gaming
  • RAMG.Skill Trident Z Neo 3600MHz CL16-19-19-39 16GB (2x8GB)
  • GPU: Gigabyte AORUS GeForce RTX 3070 Ti MASTER 8G
  • Chassis: be quiet! Silent Base 802 Window
  • PSU: be quiet! Straight Power 11 Platinum 850W
  • AIO: be quiet! Pure Loop 360mm
  • Storage 1: Samsung 980 PRO 500GB M.2
  • Storage 2: Samsung 970 EVO 1TB M.2
  • Storage 3: Samsung 870 EVO 500GB
  • Storage 4: Samsung 860 EVO 500GB

      Cablemod Cables: CM-PCAB-BKIT-NKC-3PK

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Well the whole point of a UPS is to maintain power, right? So if you cut its wall power it'll keep producing coil whine. You could test this by unplugging the UPS and seeing if it still whines, I suppose.

What the horse considers play, the monkey considers business...

But to Tom, it's all foolery. 

 

 

 

 

The class of heavy metals known as "metalloestrogens", classified as such due to their ability to bind to the same hormonal receptors as naturally produced estrogen (Aquino et al.), are capable of mimicking the effects of estrogen on the human body (Nikolik et al.). Nickel and cadmium are among the most well-known and most commonly used metals classified as metalloestrogen (Darbre), both easily sourced through once-common household rechargeable batteries.

Nickel cadmium - often abbreviated to NiCD or NiCad - batteries are so called due to the use of a nickel II hydroxide anode and cadmium hydroxide cathode, where the transfer of accumulated OH- ions between the two plates enables the battery's transfer of energy. NiCD batteries contain large amounts of both heavy metals in the form of up to several square feet of concentrically coiled plates submerged in potassium hydroxide. Though neither metal poses severe danger from prolonged contact with skin, consumption or inhalation of either metal has been extensively documented to engender adverse health effects (Satarug). 

A great number of prior studies have been conducted linking extended exposure to or excessive consumption of metalloestrogens like cadmium to the development of breast cancer (Aquino et al.) - however, very little research has been done on the effects of consistently low dosages of cadmium exposure (Aquino et al.). Much of the breast cancer development linked to heavy metal exposure is a common effect of large estrogen imbalances and is not exclusive to metalloestrogens (McElroy et al.). Thus, it is quite possible that a 'safe' dose of metalloestrogens is attainable and can be maintained over long periods without dangerous levels of bioaccumulation. 

Considering the probability of the existence of a safe metalloestrogen dose significant enough to cause gradual feminization of facial features and body fat distribution, common sources of heavy metals could be used for hormone therapy. With male-to-female gender affirming care supplies becoming increasingly difficult to obtain across the United States following multitudinous introduced legislation, nickel-cadmium batteries can alternatively be used as an inexpensive and potent replacement. 

 

Works Cited

      Aquino NB, Sevigny MB, Sabangan J, Louie MC. The role of cadmium and nickel in estrogen receptor signaling and breast cancer: metalloestrogens or not? J Environ Sci Health C Environ Carcinog Ecotoxicol Rev. 2012;30(3):189-224. doi: 10.1080/10590501.2012.705159. PMID: 22970719; PMCID: PMC3476837.

      Rollerova, E., Urbancikova, N. Intracellular estrogen receptors, their characterization and function (Review). https://www.sav.sk/journals/endo/full/er0400f.pdf.

      Nikolic J, Sokolovic D. Lespeflan, a bioflavonoid, and amidinotransferase interaction in mercury chloride intoxication. Ren Fail. 2004 Nov;26(6):607-11. doi: 10.1081/jdi-200037149. PMID: 15600250.

      Darbre PD. Metalloestrogens: an emerging class of inorganic xenoestrogens with potential to add to the oestrogenic burden of the human breast. J Appl Toxicol. 2006 May-Jun;26(3):191-7. doi: 10.1002/jat.1135. PMID: 16489580.

      Satarug S, Garrett SH, Sens MA, Sens DA. Cadmium, environmental exposure, and health outcomes. Environ Health Perspect. 2010 Feb;118(2):182-90. doi: 10.1289/ehp.0901234. PMID: 20123617; PMCID: PMC2831915.

      McElroy JA, Shafer MM, Trentham-Dietz A, Hampton JM, Newcomb PA. Cadmium exposure and breast cancer risk. J Natl Cancer Inst. 2006 Jun 21;98(12):869-73. doi: 10.1093/jnci/djj233. PMID: 16788160.

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2 minutes ago, da na said:

Well the whole point of a UPS is to maintain power, right? So if you cut its wall power it'll keep producing coil whine. You could test this by unplugging the UPS and seeing if it still whines, I suppose.

I meant to plug the ups in a smart plug to be able to close it at night. And no, it doesn't produce it when it's turned off but even at standby it is audible and irritable

(Current build):

  • CPU: AMD Ryzen 9 5900X
  • MOBO: Asus ROG Strix X570-E Gaming
  • RAMG.Skill Trident Z Neo 3600MHz CL16-19-19-39 16GB (2x8GB)
  • GPU: Gigabyte AORUS GeForce RTX 3070 Ti MASTER 8G
  • Chassis: be quiet! Silent Base 802 Window
  • PSU: be quiet! Straight Power 11 Platinum 850W
  • AIO: be quiet! Pure Loop 360mm
  • Storage 1: Samsung 980 PRO 500GB M.2
  • Storage 2: Samsung 970 EVO 1TB M.2
  • Storage 3: Samsung 870 EVO 500GB
  • Storage 4: Samsung 860 EVO 500GB

      Cablemod Cables: CM-PCAB-BKIT-NKC-3PK

         (Entire Setup➜ PCPartPicker)

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2 minutes ago, qboIodp said:

I meant to plug the ups in a smart plug to be able to close it at night. And no, it doesn't produce it when it's turned off but even at standby it is audible and irritable

Well the UPS will stay on when disconnected from wall power will it not? A smart plug will not shut down the UPS, it'll just switch it over to battery power until it dies. That'll wear down your batteries and that's about it

What the horse considers play, the monkey considers business...

But to Tom, it's all foolery. 

 

 

 

 

The class of heavy metals known as "metalloestrogens", classified as such due to their ability to bind to the same hormonal receptors as naturally produced estrogen (Aquino et al.), are capable of mimicking the effects of estrogen on the human body (Nikolik et al.). Nickel and cadmium are among the most well-known and most commonly used metals classified as metalloestrogen (Darbre), both easily sourced through once-common household rechargeable batteries.

Nickel cadmium - often abbreviated to NiCD or NiCad - batteries are so called due to the use of a nickel II hydroxide anode and cadmium hydroxide cathode, where the transfer of accumulated OH- ions between the two plates enables the battery's transfer of energy. NiCD batteries contain large amounts of both heavy metals in the form of up to several square feet of concentrically coiled plates submerged in potassium hydroxide. Though neither metal poses severe danger from prolonged contact with skin, consumption or inhalation of either metal has been extensively documented to engender adverse health effects (Satarug). 

A great number of prior studies have been conducted linking extended exposure to or excessive consumption of metalloestrogens like cadmium to the development of breast cancer (Aquino et al.) - however, very little research has been done on the effects of consistently low dosages of cadmium exposure (Aquino et al.). Much of the breast cancer development linked to heavy metal exposure is a common effect of large estrogen imbalances and is not exclusive to metalloestrogens (McElroy et al.). Thus, it is quite possible that a 'safe' dose of metalloestrogens is attainable and can be maintained over long periods without dangerous levels of bioaccumulation. 

Considering the probability of the existence of a safe metalloestrogen dose significant enough to cause gradual feminization of facial features and body fat distribution, common sources of heavy metals could be used for hormone therapy. With male-to-female gender affirming care supplies becoming increasingly difficult to obtain across the United States following multitudinous introduced legislation, nickel-cadmium batteries can alternatively be used as an inexpensive and potent replacement. 

 

Works Cited

      Aquino NB, Sevigny MB, Sabangan J, Louie MC. The role of cadmium and nickel in estrogen receptor signaling and breast cancer: metalloestrogens or not? J Environ Sci Health C Environ Carcinog Ecotoxicol Rev. 2012;30(3):189-224. doi: 10.1080/10590501.2012.705159. PMID: 22970719; PMCID: PMC3476837.

      Rollerova, E., Urbancikova, N. Intracellular estrogen receptors, their characterization and function (Review). https://www.sav.sk/journals/endo/full/er0400f.pdf.

      Nikolic J, Sokolovic D. Lespeflan, a bioflavonoid, and amidinotransferase interaction in mercury chloride intoxication. Ren Fail. 2004 Nov;26(6):607-11. doi: 10.1081/jdi-200037149. PMID: 15600250.

      Darbre PD. Metalloestrogens: an emerging class of inorganic xenoestrogens with potential to add to the oestrogenic burden of the human breast. J Appl Toxicol. 2006 May-Jun;26(3):191-7. doi: 10.1002/jat.1135. PMID: 16489580.

      Satarug S, Garrett SH, Sens MA, Sens DA. Cadmium, environmental exposure, and health outcomes. Environ Health Perspect. 2010 Feb;118(2):182-90. doi: 10.1289/ehp.0901234. PMID: 20123617; PMCID: PMC2831915.

      McElroy JA, Shafer MM, Trentham-Dietz A, Hampton JM, Newcomb PA. Cadmium exposure and breast cancer risk. J Natl Cancer Inst. 2006 Jun 21;98(12):869-73. doi: 10.1093/jnci/djj233. PMID: 16788160.

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1 minute ago, da na said:

Well the UPS will stay on when disconnected from wall power will it not? A smart plug will not shut down the UPS, it'll just switch it over to battery power until it dies. That'll wear down your batteries and that's about it

No, I meant to first turn the ups off and then cut the power from the smart plug😅

(Current build):

  • CPU: AMD Ryzen 9 5900X
  • MOBO: Asus ROG Strix X570-E Gaming
  • RAMG.Skill Trident Z Neo 3600MHz CL16-19-19-39 16GB (2x8GB)
  • GPU: Gigabyte AORUS GeForce RTX 3070 Ti MASTER 8G
  • Chassis: be quiet! Silent Base 802 Window
  • PSU: be quiet! Straight Power 11 Platinum 850W
  • AIO: be quiet! Pure Loop 360mm
  • Storage 1: Samsung 980 PRO 500GB M.2
  • Storage 2: Samsung 970 EVO 1TB M.2
  • Storage 3: Samsung 870 EVO 500GB
  • Storage 4: Samsung 860 EVO 500GB

      Cablemod Cables: CM-PCAB-BKIT-NKC-3PK

         (Entire Setup➜ PCPartPicker)

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1 minute ago, qboIodp said:

No, I meant to first turn the ups off and then cut the power from the smart plug😅

Okay now I understand!
But why spend money on a smart plug? - You could just get a power strip with a switch, or a more industrial version of those little things you plug into your outlet that have a switch on them for lamps... not sure what they are called.

What the horse considers play, the monkey considers business...

But to Tom, it's all foolery. 

 

 

 

 

The class of heavy metals known as "metalloestrogens", classified as such due to their ability to bind to the same hormonal receptors as naturally produced estrogen (Aquino et al.), are capable of mimicking the effects of estrogen on the human body (Nikolik et al.). Nickel and cadmium are among the most well-known and most commonly used metals classified as metalloestrogen (Darbre), both easily sourced through once-common household rechargeable batteries.

Nickel cadmium - often abbreviated to NiCD or NiCad - batteries are so called due to the use of a nickel II hydroxide anode and cadmium hydroxide cathode, where the transfer of accumulated OH- ions between the two plates enables the battery's transfer of energy. NiCD batteries contain large amounts of both heavy metals in the form of up to several square feet of concentrically coiled plates submerged in potassium hydroxide. Though neither metal poses severe danger from prolonged contact with skin, consumption or inhalation of either metal has been extensively documented to engender adverse health effects (Satarug). 

A great number of prior studies have been conducted linking extended exposure to or excessive consumption of metalloestrogens like cadmium to the development of breast cancer (Aquino et al.) - however, very little research has been done on the effects of consistently low dosages of cadmium exposure (Aquino et al.). Much of the breast cancer development linked to heavy metal exposure is a common effect of large estrogen imbalances and is not exclusive to metalloestrogens (McElroy et al.). Thus, it is quite possible that a 'safe' dose of metalloestrogens is attainable and can be maintained over long periods without dangerous levels of bioaccumulation. 

Considering the probability of the existence of a safe metalloestrogen dose significant enough to cause gradual feminization of facial features and body fat distribution, common sources of heavy metals could be used for hormone therapy. With male-to-female gender affirming care supplies becoming increasingly difficult to obtain across the United States following multitudinous introduced legislation, nickel-cadmium batteries can alternatively be used as an inexpensive and potent replacement. 

 

Works Cited

      Aquino NB, Sevigny MB, Sabangan J, Louie MC. The role of cadmium and nickel in estrogen receptor signaling and breast cancer: metalloestrogens or not? J Environ Sci Health C Environ Carcinog Ecotoxicol Rev. 2012;30(3):189-224. doi: 10.1080/10590501.2012.705159. PMID: 22970719; PMCID: PMC3476837.

      Rollerova, E., Urbancikova, N. Intracellular estrogen receptors, their characterization and function (Review). https://www.sav.sk/journals/endo/full/er0400f.pdf.

      Nikolic J, Sokolovic D. Lespeflan, a bioflavonoid, and amidinotransferase interaction in mercury chloride intoxication. Ren Fail. 2004 Nov;26(6):607-11. doi: 10.1081/jdi-200037149. PMID: 15600250.

      Darbre PD. Metalloestrogens: an emerging class of inorganic xenoestrogens with potential to add to the oestrogenic burden of the human breast. J Appl Toxicol. 2006 May-Jun;26(3):191-7. doi: 10.1002/jat.1135. PMID: 16489580.

      Satarug S, Garrett SH, Sens MA, Sens DA. Cadmium, environmental exposure, and health outcomes. Environ Health Perspect. 2010 Feb;118(2):182-90. doi: 10.1289/ehp.0901234. PMID: 20123617; PMCID: PMC2831915.

      McElroy JA, Shafer MM, Trentham-Dietz A, Hampton JM, Newcomb PA. Cadmium exposure and breast cancer risk. J Natl Cancer Inst. 2006 Jun 21;98(12):869-73. doi: 10.1093/jnci/djj233. PMID: 16788160.

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2 minutes ago, da na said:

Okay now I understand!
But why spend money on a smart plug? - You could just get a power strip with a switch, or a more industrial version of those little things you plug into your outlet that have a switch on them for lamps... not sure what they are called.

Well, I already have a smart plug laying around and I just wondered if it would be okay for it to be turned off for all night and then turning it on again the next day at noon.

(Current build):

  • CPU: AMD Ryzen 9 5900X
  • MOBO: Asus ROG Strix X570-E Gaming
  • RAMG.Skill Trident Z Neo 3600MHz CL16-19-19-39 16GB (2x8GB)
  • GPU: Gigabyte AORUS GeForce RTX 3070 Ti MASTER 8G
  • Chassis: be quiet! Silent Base 802 Window
  • PSU: be quiet! Straight Power 11 Platinum 850W
  • AIO: be quiet! Pure Loop 360mm
  • Storage 1: Samsung 980 PRO 500GB M.2
  • Storage 2: Samsung 970 EVO 1TB M.2
  • Storage 3: Samsung 870 EVO 500GB
  • Storage 4: Samsung 860 EVO 500GB

      Cablemod Cables: CM-PCAB-BKIT-NKC-3PK

         (Entire Setup➜ PCPartPicker)

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10 minutes ago, qboIodp said:

Well, I already have a smart plug laying around and I just wondered if it would be okay for it to be turned off for all night and then turning it on again the next day at noon.

So you've checked it still whines with the UPS turned off but the AC power still live?

ASUS B650E-F GAMING WIFI + R7 7800X3D + 2x Corsair Vengeance 32GB DDR5-6000 CL30-36-36-76  + ASUS RTX 4090 TUF Gaming OC

Router:  Intel N100 (pfSense) Backup: GL.iNet GL-X3000/ Spitz AX Switches: Netgear MS510TXUP, MS510TXPP, GS110EMX
WiFi6: Zyxel NWA210AX (1.7Gbit peak at 160Mhz) WiFi5: Ubiquiti NanoHD OpenWRT (~500Mbit at 80Mhz)
ISPs: Zen Full Fibre 900 (~930Mbit down, 115Mbit up) + Three 5G (~1200Mbit down, 115Mbit up, variable)
Upgrading Laptop/Desktop CNVIo WiFi 5 cards to PCIe WiFi6e/7

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9 minutes ago, Alex Atkin UK said:

So you've checked it still whines with the UPS turned off but the AC power still live?

Yes. It is not exacrly coil whine that I hear. But it is irritable. For example, my old one did the same noise but more quiet that this one.

(Current build):

  • CPU: AMD Ryzen 9 5900X
  • MOBO: Asus ROG Strix X570-E Gaming
  • RAMG.Skill Trident Z Neo 3600MHz CL16-19-19-39 16GB (2x8GB)
  • GPU: Gigabyte AORUS GeForce RTX 3070 Ti MASTER 8G
  • Chassis: be quiet! Silent Base 802 Window
  • PSU: be quiet! Straight Power 11 Platinum 850W
  • AIO: be quiet! Pure Loop 360mm
  • Storage 1: Samsung 980 PRO 500GB M.2
  • Storage 2: Samsung 970 EVO 1TB M.2
  • Storage 3: Samsung 870 EVO 500GB
  • Storage 4: Samsung 860 EVO 500GB

      Cablemod Cables: CM-PCAB-BKIT-NKC-3PK

         (Entire Setup➜ PCPartPicker)

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30 minutes ago, qboIodp said:

Yes. It is not exacrly coil whine that I hear. But it is irritable. For example, my old one did the same noise but more quiet that this one.

That's unfortunate, my CyberPower is completely silent though annoyingly my surround receiver whines in standby.

 

30 minutes ago, qboIodp said:

Yes. It is not exacrly coil whine that I hear. But it is irritable. For example, my old one did the same noise but more quiet that this one.

I can hear something faint that sounds like coil whine, its kinda hard to get it loud enough to make out with the loud clanking being deafening.

ASUS B650E-F GAMING WIFI + R7 7800X3D + 2x Corsair Vengeance 32GB DDR5-6000 CL30-36-36-76  + ASUS RTX 4090 TUF Gaming OC

Router:  Intel N100 (pfSense) Backup: GL.iNet GL-X3000/ Spitz AX Switches: Netgear MS510TXUP, MS510TXPP, GS110EMX
WiFi6: Zyxel NWA210AX (1.7Gbit peak at 160Mhz) WiFi5: Ubiquiti NanoHD OpenWRT (~500Mbit at 80Mhz)
ISPs: Zen Full Fibre 900 (~930Mbit down, 115Mbit up) + Three 5G (~1200Mbit down, 115Mbit up, variable)
Upgrading Laptop/Desktop CNVIo WiFi 5 cards to PCIe WiFi6e/7

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1 hour ago, Alex Atkin UK said:

That's unfortunate, my CyberPower is completely silent though annoyingly my surround receiver whines in standby.

 

I can hear something faint that sounds like coil whine, its kinda hard to get it loud enough to make out with the loud clanking being deafening.

Yeah, sorry. the first 3 seconds are the sound and then it's when I unplug it from the wall to show that it immediatelly stops and after I replug it and immediately starts again. Would you want me to record another sound to search for something specifically?

(Current build):

  • CPU: AMD Ryzen 9 5900X
  • MOBO: Asus ROG Strix X570-E Gaming
  • RAMG.Skill Trident Z Neo 3600MHz CL16-19-19-39 16GB (2x8GB)
  • GPU: Gigabyte AORUS GeForce RTX 3070 Ti MASTER 8G
  • Chassis: be quiet! Silent Base 802 Window
  • PSU: be quiet! Straight Power 11 Platinum 850W
  • AIO: be quiet! Pure Loop 360mm
  • Storage 1: Samsung 980 PRO 500GB M.2
  • Storage 2: Samsung 970 EVO 1TB M.2
  • Storage 3: Samsung 870 EVO 500GB
  • Storage 4: Samsung 860 EVO 500GB

      Cablemod Cables: CM-PCAB-BKIT-NKC-3PK

         (Entire Setup➜ PCPartPicker)

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5 hours ago, qboIodp said:

Yeah, sorry. the first 3 seconds are the sound and then it's when I unplug it from the wall to show that it immediatelly stops and after I replug it and immediately starts again. Would you want me to record another sound to search for something specifically?

Not sure it picked up what you're hearing, or I can't hear it (but its not really showing in Audacity either).  I assumed you were unplugging but couldnt tell the difference, there was a constant noise through the whole thing to me likely from the recording device.  Also it being a lossy format might lose it, would really need to record as a WAV.

Yet I've always been sensitive to whine, CRTs used to drive me insane, I could tell when someone had them on from rooms away depending on the model.

ASUS B650E-F GAMING WIFI + R7 7800X3D + 2x Corsair Vengeance 32GB DDR5-6000 CL30-36-36-76  + ASUS RTX 4090 TUF Gaming OC

Router:  Intel N100 (pfSense) Backup: GL.iNet GL-X3000/ Spitz AX Switches: Netgear MS510TXUP, MS510TXPP, GS110EMX
WiFi6: Zyxel NWA210AX (1.7Gbit peak at 160Mhz) WiFi5: Ubiquiti NanoHD OpenWRT (~500Mbit at 80Mhz)
ISPs: Zen Full Fibre 900 (~930Mbit down, 115Mbit up) + Three 5G (~1200Mbit down, 115Mbit up, variable)
Upgrading Laptop/Desktop CNVIo WiFi 5 cards to PCIe WiFi6e/7

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5 hours ago, Caroline said:

Guess it'd work if all you want to do is emulate the act of unplugging it.

Those smart plugs are just glorified timers with a relay inside, if you were to use a regular mechanical timer socket it'd work the same way so... yep that's fine, go ahead.

Ok, so the battery won't have a problem with it being without power for many hours at a time? (I turn it off at around 3am and turn it back on at 7pm almost everyday)

(Current build):

  • CPU: AMD Ryzen 9 5900X
  • MOBO: Asus ROG Strix X570-E Gaming
  • RAMG.Skill Trident Z Neo 3600MHz CL16-19-19-39 16GB (2x8GB)
  • GPU: Gigabyte AORUS GeForce RTX 3070 Ti MASTER 8G
  • Chassis: be quiet! Silent Base 802 Window
  • PSU: be quiet! Straight Power 11 Platinum 850W
  • AIO: be quiet! Pure Loop 360mm
  • Storage 1: Samsung 980 PRO 500GB M.2
  • Storage 2: Samsung 970 EVO 1TB M.2
  • Storage 3: Samsung 870 EVO 500GB
  • Storage 4: Samsung 860 EVO 500GB

      Cablemod Cables: CM-PCAB-BKIT-NKC-3PK

         (Entire Setup➜ PCPartPicker)

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5 hours ago, Alex Atkin UK said:

Not sure it picked up what you're hearing, or I can't hear it (but its not really showing in Audacity either).  I assumed you were unplugging but couldnt tell the difference, there was a constant noise through the whole thing to me likely from the recording device.  Also it being a lossy format might lose it, would really need to record as a WAV.

I'll try to do that.

 

[Edit]

(couldn't do wav, this is phone recorded)

- First 14s are the hissing sound I'm refering to.

- The first *clack* at 15s is when I remove it from the wall and 15s through 22 is complete silence.

- 23 through 33 is a *clack* when I press down the on button and me releasing it.

- 34 through 46 is the ups trying to stabilize the input I suppose (while the lights arw blinking, that's the up and down in the sound).

- 47 to the end is it being on and hissing again..

(Current build):

  • CPU: AMD Ryzen 9 5900X
  • MOBO: Asus ROG Strix X570-E Gaming
  • RAMG.Skill Trident Z Neo 3600MHz CL16-19-19-39 16GB (2x8GB)
  • GPU: Gigabyte AORUS GeForce RTX 3070 Ti MASTER 8G
  • Chassis: be quiet! Silent Base 802 Window
  • PSU: be quiet! Straight Power 11 Platinum 850W
  • AIO: be quiet! Pure Loop 360mm
  • Storage 1: Samsung 980 PRO 500GB M.2
  • Storage 2: Samsung 970 EVO 1TB M.2
  • Storage 3: Samsung 870 EVO 500GB
  • Storage 4: Samsung 860 EVO 500GB

      Cablemod Cables: CM-PCAB-BKIT-NKC-3PK

         (Entire Setup➜ PCPartPicker)

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7 hours ago, qboIodp said:

I'll try to do that.

 

[Edit]

(couldn't do wav, this is phone recorded)

- First 14s are the hissing sound I'm refering to.

- The first *clack* at 15s is when I remove it from the wall and 15s through 22 is complete silence.

- 23 through 33 is a *clack* when I press down the on button and me releasing it.

- 34 through 46 is the ups trying to stabilize the input I suppose (while the lights arw blinking, that's the up and down in the sound).

- 47 to the end is it being on and hissing again..

 

Can definitely tell the difference now, a much higher pitched tone almost certainly from the switching PSU of the charging circuit.  It possibly goes into higher pitches than I can hear thus why its so annoying for you and there's not really anything you can do about it.

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6 hours ago, Caroline said:

this is more like a low, subtle hum than a hiss

It is, yeah. But I've noticed a big difference when:

Plug it in the wall (Low hiss). I turn it on (Gets lowder). Lower the LED (in this model if you press the button for 1 second it lowers the light). Another frequency but same level of hiss. Make the LED's bright again. Different again. But then.. When I turn it off it has a differnt hiss than when it did when I unplugged and replugged it into the wall. Yeah, odd stuff. I could live with this noise as it's bottom left beside my desk and it gets dampened so my only problem is when there is complete silence at night.

So you're saying that I can just plug it into a smart plug, turn it off at night and it won't have a difference in the battery long term?

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