T
treez
Guest
If an ultraviolet print head for a curing machine has a 100W bank of leds on it supplied by a Buck converter LED driver from a 48V rail…then what extra safety precautions need taking if the rail is made to be minus 230VDC?
(That’s an ‘isolated-from-the-mains’ -230VDC).
The leds are in Buck connection, with the anode to the 0V rail, so the actual led voltage is never more than 50V above earth ground, even though they are supplied from the output of a –230VDC SMPS.
(That’s an ‘isolated-from-the-mains’ -230VDC).
The leds are in Buck connection, with the anode to the 0V rail, so the actual led voltage is never more than 50V above earth ground, even though they are supplied from the output of a –230VDC SMPS.