View Single Post
  #7  
Old 22-02-2022, 08:50 AM
ausastronomer (John Bambury)
Registered User

ausastronomer is offline
 
Join Date: Mar 2005
Location: Shoalhaven Heads, NSW
Posts: 2,620
Quote:
Originally Posted by Hans Tucker View Post
Noticed the kitchen light suddenly dim to half it luminance.
Buy a new one. It will die completely within the next few days. LED bulbs normally last a very long time, but they are mass produced using cheap components and maybe 1 in 20 will not last even close to the anticipated 50,000 hours expected life.

Quote:
It has one of those LED bayonet style bulbs because some Muppet politician banned incandescent bulbs.
Why would anyone want an incandescent bulb anyway ? They get a "X" on every evaluation criteria compared to LED bulbs.

For people that live off the grid, or in situations where a system or environment is dependent on batteries, like on boats etc, LED lighting has been "Life Changing"

Quote:
Any way I noted that when I turned the light switch off the light remained illuminated for a few seconds.

Do LED lights exhibit capacitance effect?

Is this a normal behavior for an LED in its death throes?
This is perfectly normal. Unlike incandescent bulbs which run straight off the mains power @ ~240V, LED bulbs operate at very low voltages. There is internal circuitry to drop the voltage and drive the LED(s) which includes capacitors. These "can" sometimes take a second or 2 to discharge when you switch the light off.

Cheers
John B
Reply With Quote