Hello,
I have an issue with a CCFL inverter designed to turn on and dim one UV bulb.
The inverter has been made is China and is based on the chip OB3302 (I have seen some posts about it on this website). There are five signals feeding into the chip: +5V for the logic gates of the chip. +12V to the MOSFETs pumping the transformer. Ground signal. And two control signals - an ENABLE signal to turn the lamp completely ON and OFF, as well as LPWM to control the intensity while it is ON. Presumably the allowed logic level on LPWM, is a 5V amplitude signal. There also is a feedback pin...

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Hello everybody !
I am an engineer in Biotechnologies, new to electrical engineering and with tons of issues to solve I am really excited to learn new things about electronics and hope I have challenging questions for you !
Thank you in advance for our discussions !