|
Thread Number: 80182
/ Tag: Other Home Products or Autos
LED dimming |
[Down to Last] |  |
Post# 1041321 8/10/2019 at 16:54 (1,720 days old) by cuffs054  (MONTICELLO, GA) |
||
|
Just put some LEDs in kitchen fixture and I notice that when A/C kicks on they flicker (dim) noticably unlike regular bulbs. Is that normal? | ||
|
|
Post# 1041377 , Reply# 1 8/11/2019 at 01:24 (1,720 days old) by petek (Ontari ari ari O ) |
||
 | ||
|
Post# 1041429 , Reply# 3 8/11/2019 at 12:25 (1,719 days old) by cuffs054 (MONTICELLO, GA) |
||
|
CircleW, you are correct in your assumptions. It's just a momentary dim when central unit starts. It just surprised me since the old incandesents didn't do it. | ||
|
Post# 1041432 , Reply# 4 8/11/2019 at 13:03 (1,719 days old) by LowEfficiency (Iowa) |
||
>> It just surprised me since the old incandesents didn't do it.
They probably did, just that it was less noticeable. Incandescent lights have a slower reaction time when turned on or off, as the electricity is turned into light by heating the filament until it glows. That hot filament has some thermal mass, and doesn't instantly cool down when the power dips or the switch is turned off, so it continues to produce light for some short period of time when turned off. Likewise, when the power is restored, it takes a small amount of time to ramp up to full brightness, making the turn-on less noticeable. | ||
|
Post# 1041434 , Reply# 5 8/11/2019 at 13:38 (1,719 days old) by DADoES (TX, U.S. of A.) |
||
 I notice that the halogen torchiere in my living room dims momentarily when the A/C turns on (5-ton heat pump). The only time I use that lamp is when watching movies at night. I have not noticed A/C-dimming from the many LEDs that are now in use (A/C turned on a few seconds ago, the two 85-watt LED floods above/in front of me didn't dim). However, there may be slight dimming (for the duration) when the electric tankless water heater triggers depending on how much power it draws for the required output. I can see the dimming increase/decrease if I increase/decrease the water flow at a tap, especially the bathtubs which are not flow-restricted, which increases/decreases the load and current draw on the water heater. | ||
|
Post# 1041448 , Reply# 6 8/11/2019 at 18:30 (1,719 days old) by LowEfficiency (Iowa) |
||
|
>> I have not noticed A/C-dimming from the many LEDs that are now in use (A/C turned on a few >> seconds ago, the two 85-watt LED floods above/in front of me didn't dim). Consider yourself lucky - you have lights with good enough capacitors on the power supply output to ride out those dips! Not all LED lights do, particularly the cheap ones. | ||
| Forum Index: |
| Other Forums: |
|
|
|
|
|
Comes to the Rescue!
