constant current source 100mA to 380mA via Dip-switch
The breakthrough of LEDs started with the so-called power LEDs. These were powered with 350mA. Many users talked about “1W operation” of a LED. Higher currents were not usual for the lifetime and the necessary heat dissipation. Therefore, the demand for LED drivers with a current of 350mA was high.
Yes, then one started to connect LEDs in series. In this way, several LEDs could be operated over a 350mA LED Driver. But more than eight LEDs were unusual. 350mA LED Driver with maximum output voltage higher than 24V were a no-go.
Today it is still common to operate LEDs via 350mA LED Drivers. This ensures low heat generation, higher efficiency and higher longevity as compared to operation with constant currents of a LED driver with 700mA or more.
The sorrow of higher output voltages is also history.
The LED Driver 350mA Maxi Jolly HV 122414 allows to efficiently operate 30 LEDs in a series with a string.
Sceptics fear that failure of a LED might lead to failure of the entire series. Experience shows that, due to their nature and internal protection diodes, 95% of LEDs end in a short circuit if there is a defect.
That means that the current can keep flowing and only one LED is destroyed.
Everywhere where especially sustainability, longevity and reliability counts, LEDs are still preferably operated with a LED Driver 350mA. Especially street lighting still commonly uses LED drivers with 350mA.