Rohde & Schwarz adds linear accuracy to ‘basic’ power supply

Four power supplies in the NGA100 series by Rohde & Schwarz provide single and dual outputs with up to 35V / 6A per output or 100V / 2A per output. Single output models supply up to 40W and dual output models up to 80W power. The dual model outputs can be combined to provide up to 200V or 12A.

The company has implemented a linear design throughout the output circuits of the NGA100 which significantly improves performance compared to the switched mode circuits frequently found in basic power supplies. The resulting higher accuracy means engineers can be confident of supplying exactly the right power level without any need for an additional multimeter. The standard level of read-back resolution, 1mV / 100 microA, is enhanced for currents under 200mA to a resolution of 1 microA, which is suitable to test low current levels typical for IoT applications in standby and sleep mode. The NGA100 also has the necessary dynamic range for the power and current spikes from the same devices when switched to active mode.

While many basic power supplies only output maximum power within a very limited voltage/amperage range, Rhode & Schwarz’s FlexPower technology provides maximum power for a range of combinations, so that a single instrument can support different applications. For all applications, users benefit from the clear screen, intuitive user interface, together with features like instantaneous statistical functions for maximum and minimum values for power, voltage and current, displayed directly on the screen.

Other features not commonly found in a basic power supply include logging voltage and current values for analysis, with up to 10 samples per second. Ethernet and USB are supported as standard, for data export and remote control and there is optional WLAN and an external trigger with digital I/O. Users can generate sequences of voltage/current settings at intervals down to 10 milliseconds.

The supplied power is not only low-distortion and low-noise, but the instrument’s remote sensing function means cable losses can be compensated for. The correct level is at the input to the device under test, not at the output of the power supply.

The NGA100 power supply series is part of the R&S Essentials portfolio, and is available now from Rohde & Schwarz and selected distribution partners.

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