Drivers for constant current or constant voltage operation?

If a LED module is operated using a constant voltage source without current limitation, the current will increase up to the thermal destruction of the LED. To avoid this effect, LED modules for operation with constant voltage are fitted with integrated current control.

When operating a LED using a constant current source, the LED is operated at a constant current, with current control being integrated in the driver. Constant current sources can feature either transistors or integrated circuits. The use of a constant current source is more efficient.

Tolerance values for output currents constitute a qualitative criterion.

A value of ± 5% is typical for high-quality devices, while a value of ± 10% is characteristic of low-cost devices.

Our partner from the USA has been developing and producing high-quality semiconductor for about 30 years. CREE has been our partner for an extensive range of LEDs since 2004. The product range includes a wide range of high brightness, high power LEDs offered in SMD as well as THT and COB technology.

Your contact: Olaf Naumann

Phone +49 (0)2842 980-211
Olaf.Naumann@vossloh-schwabe.com

Nichia from Japan, the inventor of the white LEDs, has been one of the partners of VS since 1995. The product range includes a comprehensive range of high brightness and high power LEDs, as well as a UV LED product range covering all power classes.

Your contact: Ulf Hilsenberg

Phone +49 2842 980-213
Ulf.Hilsenberg@vossloh-schwabe.com

To complement our LED range, we offer secondary optics and reflectors from our partners Carclo (www.carclo.com) and LEDiL (www.ledil.com). The product range includes a large selection of optics, optic holders and reflectors made of PMMA and silicone. We specifically stock up on a wide range of products to match the LEDs from CREE and Nichia we offer.




We develop and produce a variety of LED optics for shop, office, hall and street lighting for you. Optics are available in various designs (round, square, linear) made of high-quality materials (PMMA, silicone) and with any beam angles (narrow/wide, asymmetrical or combined).

Our partner from the USA has been developing and producing high-quality semiconductor for about 30 years. CREE has been our partner for an extensive range of LEDs since 2004. The product range includes a wide range of high brightness, high power LEDs offered in SMD as well as THT and COB technology.

Your contact: Olaf Naumann

Phone +49 (0)2842 980-211
Olaf.Naumann@vossloh-schwabe.com


Nichia from Japan, the inventor of the white LEDs, has been one of the partners of VS since 1995. The product range includes a comprehensive range of high brightness and high power LEDs, as well as a UV LED product range covering all power classes.

Your contact: Ulf Hilsenberg

Phone +49 2842 980-213
Ulf.Hilsenberg@vossloh-schwabe.com