tynnor
Junior Member level 1
Hello,
I have always used the following schematic to control my lighting in my application :
I have changed the lights for a 100W sodium-vapor lamp and a 39W tube lamp. Both have an integrated electronic ballast. And now, even when optotriac is off (I assume it from the input led command I checked with a scope), the tube lamp is blinking ! If the 100W lamp is the only one plugged, there is no blink, but the light is slightly on.
What I tried:
- Open the snubber to identify a possible leakage
- Change R_snubber to 360 Ohm
- Put an R2-C1 filter like the following one (39 Ohm - 100n and 39 Ohm - 10n) to dump any oscillation. It was even worst
- Add 10kOhm load across the triac terminals to dissipate a possible leakage
Nothing improved the situation.
Unfortunately, I don't have the stuff to make scope measurements in this part of the board, so I am working like Gilbert Montagné is playling piano
Do you have any idea from where the problem can come from ?
Thank you
I have always used the following schematic to control my lighting in my application :
I have changed the lights for a 100W sodium-vapor lamp and a 39W tube lamp. Both have an integrated electronic ballast. And now, even when optotriac is off (I assume it from the input led command I checked with a scope), the tube lamp is blinking ! If the 100W lamp is the only one plugged, there is no blink, but the light is slightly on.
What I tried:
- Open the snubber to identify a possible leakage
- Change R_snubber to 360 Ohm
- Put an R2-C1 filter like the following one (39 Ohm - 100n and 39 Ohm - 10n) to dump any oscillation. It was even worst
- Add 10kOhm load across the triac terminals to dissipate a possible leakage
Nothing improved the situation.
Unfortunately, I don't have the stuff to make scope measurements in this part of the board, so I am working like Gilbert Montagné is playling piano
Do you have any idea from where the problem can come from ?
Thank you