@@Fluffberymoff They can run on a 22W preheat circline fluorescent ballast, but they will be significantly underdriven since a 22W circline fluorescent lamp has an operating current of about 380mA while these FML27 CFL lamps have an operating current of about 610mA. Additionally, the Japanese 225mm diameter 30W circline fluorescent lamps and their 28W energy saver counterparts are designed to run on the same ballasts that these FML27 CFL lamps run on.
As far as I know, if you increase the applied frequency on an inductive load, it will draw less current if you run it on the same voltage due to the increased AC resistance, which results in lamps being underdriven somewhat. In order to compensate for that, you would need to increase the applied voltage in order for the fluorescent lamp to run properly like from 100V to 110V in order to compensate for the lamp being underdriven on a 100V 60Hz supply. In that case, it essentially acts like a 110V 60Hz ballast. But when it runs at 120V 60Hz, there is a slight overload but it is within a tolerable level since the difference between 110V and 120V is so neglibible that the ballast should experience very little reduction in its service life.
The lamp is actually a 4 pin FML27 CFL lamp hooked up to an external replaceable starter installed in the desk lamp. A fun fact about the starter is that it is a screw in type that uses an intermediate base like you see on C9 Christmas lights. They are unique to Japan and this desk lamp is made for the Japanese market. The starter can be seen at the 5:03 timestamp of this video.
Nice
Can those bulbs run on a standard 22w circline ballast?
@@Fluffberymoff They can run on a 22W preheat circline fluorescent ballast, but they will be significantly underdriven since a 22W circline fluorescent lamp has an operating current of about 380mA while these FML27 CFL lamps have an operating current of about 610mA. Additionally, the Japanese 225mm diameter 30W circline fluorescent lamps and their 28W energy saver counterparts are designed to run on the same ballasts that these FML27 CFL lamps run on.
Despite the ballast being given "too much voltage," it actually isn't because of the 50hz. How does that work?
As far as I know, if you increase the applied frequency on an inductive load, it will draw less current if you run it on the same voltage due to the increased AC resistance, which results in lamps being underdriven somewhat. In order to compensate for that, you would need to increase the applied voltage in order for the fluorescent lamp to run properly like from 100V to 110V in order to compensate for the lamp being underdriven on a 100V 60Hz supply. In that case, it essentially acts like a 110V 60Hz ballast. But when it runs at 120V 60Hz, there is a slight overload but it is within a tolerable level since the difference between 110V and 120V is so neglibible that the ballast should experience very little reduction in its service life.
Is this a 2 pin pl light bulb
The lamp is actually a 4 pin FML27 CFL lamp hooked up to an external replaceable starter installed in the desk lamp.
A fun fact about the starter is that it is a screw in type that uses an intermediate base like you see on C9 Christmas lights. They are unique to Japan and this desk lamp is made for the Japanese market. The starter can be seen at the 5:03 timestamp of this video.