On Saturday, 21 April 2018 18:44:04 UTC+1, Andy Burns wrote:
tabbypurr wrote:
Andy Burns wrote:
tabbypurr wrote:

Fairly trivial to make a CR ballast.

would that be non-isolated from mains?

yes they're not isolated. I take it your LEDs are touchable then.

not touchable, but the LED strip (unusually all in series) is only
separated from the aluminium case by a strip of some tape, the LED part
is 3m distant from the driver, with just two single insulated cables for
+ and - to it, no earth available ...

The other thought is to replace the LED strip with more conventional 12V
LED strip that's cuttable every nth-LED and use a more easily obtainable
driver.

You can make isolated CR PSUs by starting with 2 mains transformers back to back. But really if it runs on 90v it should use earth & proper insulation.


NT