Timeline for Can reversing AC polarity of one of two adjacent LED bulbs reduce overall flickering in a room?
Current License: CC BY-SA 4.0
20 events
| when toggle format | what | by | license | comment | |
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| Feb 27, 2020 at 11:46 | comment | added | Amr Berag | @user1850479 Yes. Now I understand that would require a polyphase system | |
| Feb 27, 2020 at 11:21 | vote | accept | Amr Berag | ||
| Feb 27, 2020 at 2:30 | comment | added | user1850479 | @AmrBerag Not AC frequency, twice AC frequency. Hence you need a 90 degree phase shift, since if you try 180 degrees and then double that you get 360 degrees, which is just back where you started. | |
| Feb 27, 2020 at 0:16 | comment | added | Amr Berag | @Harper-ReinstateMonica There are plenty other reasons to reduce power consumption than communism E.g environmentalism, green party or Islam. We pay 10 - 20 percent of the actual generation cost for domestic bills | |
| Feb 26, 2020 at 23:55 | comment | added | Harper - Reinstate Monica | You can't go by bulb price, because governments and power companies subsidize LED bulbs to save energy. Before you go "oh, communism", it's often the power company. New plants cost about $5 a watt - more for peakers. So it's cheaper to pay people to save energy. | |
| Feb 26, 2020 at 23:52 | answer | added | haresfur | timeline score: 0 | |
| Feb 26, 2020 at 23:26 | comment | added | Hearth | @AmrBerag There's a difference between "meets safety standards" and "good quality"; less than one euro per bulb is not going to get you a good quality LED bulb. | |
| Feb 26, 2020 at 22:56 | comment | added | Amr Berag | @user1850479 AFAIK there at least 3 types of flickering reasons 1AC frequency especially cheap bulbs were they dont add some capacitor for smoother DC supply 2 To reduce power consumption 3 Dimming | |
| Feb 26, 2020 at 22:46 | comment | added | Amr Berag | @Hearth It has ISO and other certification symbols and the build quality looks and feels good and individual LEDs are labeled D1 D2... but its a cheap bulb at less than one Euro each but it has other echoes I will post a a question about: it causes instant migraine when looked at with the cap remove while a 5 times stronger one doesn't | |
| Feb 26, 2020 at 17:40 | answer | added | Harper - Reinstate Monica | timeline score: 0 | |
| Feb 26, 2020 at 17:35 | review | Close votes | |||
| Mar 3, 2020 at 3:04 | |||||
| Feb 26, 2020 at 17:30 | comment | added | Hearth | If it changes when reversed, that indicates to me that you have a poor-quality LED bulb that uses a half-wave rectifier. This type is substantially more flickery than ones that use full-wave rectifiers. But what you suggest would work on these bulbs. It will not, however, get the flickering to be as low as full-wave-rectified bulbs. | |
| Feb 26, 2020 at 17:25 | comment | added | user1850479 | @AmrBerag Since LEDs flicker at double mains frequency, flipping the hot and neutral does nothing. You'd need to phase shift one by 90 degrees to do what you want. | |
| Feb 26, 2020 at 17:19 | history | edited | Amr Berag | CC BY-SA 4.0 |
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| Feb 26, 2020 at 17:16 | answer | added | Transistor | timeline score: 2 | |
| Feb 26, 2020 at 17:02 | comment | added | Amr Berag | @Hearth But doesn't the fact that it changed its blinking/flickering pattern when reversed means that it will at least partially work? | |
| Feb 26, 2020 at 16:57 | history | edited | Amr Berag | CC BY-SA 4.0 |
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| Feb 26, 2020 at 16:15 | answer | added | DSI | timeline score: 0 | |
| Feb 26, 2020 at 15:59 | comment | added | Hearth | No, that will not work. | |
| Feb 26, 2020 at 15:55 | history | asked | Amr Berag | CC BY-SA 4.0 |