Strange blinking of light bulb after switching off

[zorgan]

http://www.youtube.com/watch?v=J5T2AO-_i-k

Strange this one, I click the switch off but the lightbulb blinks

1st blink is around 21 secs in the video

I have replaced the bulb but it still does it?

 

[bernardgreen]

Been asked and answered many times

When the switch is OFF capacitive coupling between Live and Switched Live in the wiring to the switch allows enough energy to reach the lamp and make it flash. A well known problem with energy saving lamps. They save this very small trickle of energy until it is enough to make the lamp flash.

If this has suddenly started to happen then you should check that the earth conductor in the cable to the switch is still intact and connected to the earth conductors. With the earth in place the capacitive coupling Live to Switched Live is less effective.

Putting a capacitor across the lamp will absorb this energy and prevent the lamp flashing.

//www.diynot.com/forums/viewtopic.php?p=1378727#1378727


Capacitor 0.047uF micro Farads 250 volts AC in series with a resistor 100 ohms

Which come pre-packaged as a contact suppressor from RS Components

RS Stock No. 206-7847
Manufacturer Evox-Rifa
Manufacturers Part No. PMR209MB5470M100

There are other sources of the contact suppressors

Read more: //www.diynot.com/forums/viewtopic.php?p=1955748#1955748#ixzz1V4ZNeavD

Read more: //www.diynot.com/forums/viewtopic.php?p=2081458#2081458#ixzz1ZXdMEyLA

 

[zorgan]

thanks!