EDAboard.com | EDAboard.de | EDAboard.co.uk | WTWH Media

Weird

Ask a question - edaboard.com

elektroda.net NewsGroups Forum Index - Electronics AUS - Weird

keithr0
Guest

Thu Apr 23, 2020 1:45 pm   



The wife started complaining that one of the LED globes in the dining
room was flashing. These globes are Aldi specials bought about 5 years
ago (very reliable), I thought that she meant that it was flashing on
and off while it was turned on. But no, it was giving a very short flash
every minute or so while turned off. It's on a two way switch
arrangement so the cables are quite long and I assumed that there was
some sort of capacitive coupling with another cable or some other form
of leakage causing it. However swapping the globe with another on a
normal single switch, now neither are flashing. Very strange.

Phil Allison
Guest

Thu Apr 23, 2020 2:45 pm   



keithr0 wrote:
-------------
Quote:

The wife started complaining that one of the LED globes in the dining
room was flashing. These globes are Aldi specials bought about 5 years
ago (very reliable), I thought that she meant that it was flashing on
and off while it was turned on. But no, it was giving a very short flash
every minute or so while turned off. It's on a two way switch
arrangement so the cables are quite long and I assumed that there was
some sort of capacitive coupling with another cable or some other form
of leakage causing it. However swapping the globe with another on a
normal single switch, now neither are flashing. Very strange.



** Many CFLs do the same thing - on any circuit that has leakage.

Depends entirely on the individual lamp.




..... Phil

Jasen Betts
Guest

Fri Apr 24, 2020 12:43 am   



On 2020-04-23, keithr0 <user_at_account.invalid> wrote:
Quote:
The wife started complaining that one of the LED globes in the dining
room was flashing. These globes are Aldi specials bought about 5 years
ago (very reliable), I thought that she meant that it was flashing on
and off while it was turned on. But no, it was giving a very short flash
every minute or so while turned off. It's on a two way switch
arrangement so the cables are quite long and I assumed that there was
some sort of capacitive coupling with another cable or some other form
of leakage causing it. However swapping the globe with another on a
normal single switch, now neither are flashing. Very strange.


If the single switch is on a switch loop rasther than in-line you have
the same problem. Measure the AC voltage in the lamp socket with a digital
multimeter while it's turned off.

You can mitigate the problem by adding an X capacitor (X1,X2,Y1, or Y2)
in parallel with the socket. 1 microfarad should be plenty.

"x4" in this url is just noise, it's actually X2.
https://www.jaycar.com.au/1uf-250vac-metallised-polypropylene-x4-capacitor/p/RG5248

You can get something similar from an electrician supplier (like Rexel
or Ideal) Electricians seem to call it a lighting capacitor. These have
insulated leads and so are easier to install.

--
Jasen.


Guest

Sat May 02, 2020 1:45 am   



On Thu, 23 Apr 2020 22:26:16 +1000, keithr0 <user_at_account.invalid>
wrote:

Quote:
The wife started complaining that one of the LED globes in the dining
room was flashing. These globes are Aldi specials bought about 5 years
ago (very reliable), I thought that she meant that it was flashing on
and off while it was turned on. But no, it was giving a very short flash
every minute or so while turned off. It's on a two way switch
arrangement so the cables are quite long and I assumed that there was
some sort of capacitive coupling with another cable or some other form
of leakage causing it. However swapping the globe with another on a
normal single switch, now neither are flashing. Very strange.


I've had the occasional LED light do this.

elektroda.net NewsGroups Forum Index - Electronics AUS - Weird

Ask a question - edaboard.com

Arabic version Bulgarian version Catalan version Czech version Danish version German version Greek version English version Spanish version Finnish version French version Hindi version Croatian version Indonesian version Italian version Hebrew version Japanese version Korean version Lithuanian version Latvian version Dutch version Norwegian version Polish version Portuguese version Romanian version Russian version Slovak version Slovenian version Serbian version Swedish version Tagalog version Ukrainian version Vietnamese version Chinese version Turkish version
EDAboard.com map