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Oct 29, 2026 2:01 AM UTC
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Electrical ballast for UV lamp 400W

Hello,
I have a question regarding a ballast and would appreciate some input from an ST engineer.
How can I convert a 250W HID metal halide electronic ballast into a 400W HID metal halide electronic ballast? Also, could I use it to operate a 400W mercury UV lamp?

Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
Oct 29, 2026 10:57 AM UTC

Welcome ​@baoho, to the community!

Your question is identical to this one - I recommend waiting for the answer to that.

I would also like to point out that the community is primarily for support among users, whereas ST's personal support can be found via Online Support OLS.

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

1 reply

Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
Oct 29, 2026 10:57 AM UTC

Welcome ​@baoho, to the community!

Your question is identical to this one - I recommend waiting for the answer to that.

I would also like to point out that the community is primarily for support among users, whereas ST's personal support can be found via Online Support OLS.

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.