LPS-20
Microprocessor-based LED Power Supply

Gigahertz-Optik manufactures electronic devices like lamp power supplies, mobile and bench top optometers and instrumentation that can be combined with other light measurement devices for complete application set-ups in the field of light measurement (radiometry, photometry and colorimetry) optoelectronic component qualification and (OPM) optical properties of material testing. The modular concept of the 19” 3HE housings enables individual set-ups based on customers requirements. Electronic devices are installed into the BTS-19 series housings that are available in bench top or in rack mount style.

The LPS-20 is a microprocessor-based current and voltage source especially designed for the operation of LEDs, OLEDs and other light sources requiring high resolution, very low noise operating voltage and current that is controllable and measureable . It is set-up for full remote control operation in CW or Flash mode via its RS232 or alternative RS485 opto-coupler isolated interface. Its design includes two high resolution 16 bit digital to analog converters for precise current and voltage control. It can be operated either in constant voltage or constant current mode. The variable (current or voltage) can be measured with a high resolution ADC. To avoid unintentional power loss at the linear control element its input voltage is set by a DC/DC converter to the optimum voltage needed. Beside the CW mode the output of the LPS-20 can be controlled for a defined time (single pulse) with rise time as short as 500µs (load dependent). Four different versions with different maximum output current level are supplied:

LPS-20-10: max. 10mA with 0.2µA resolution; max. 24V with 0.5mV resolution
LPS-20-100: max. 100mA with 2µA resolution; max. 24V with 0.5mV resolution
LPS-20-1000: max. 1000mA with 20µA resolution; max. 24V with 0.5mV resolution
LPS-20-1500: max. 1500mA with 30µA resolution; max. 24V with 0.5mV resolution

DLL and Labview VI are available.