R&S’ lab PSU offers variable channel switching & protection features

March 20, 2017 // By Graham Prophet
In a product sector not normally associated with the company, Rohde & Schwarz has disclosed a multichannel benchtop power supply; describing it as very small, compact and quiet, the company notes that the supply’s output rails are all galvanically isolated, floating, and can be freely combined in series or parallel.

The power supplies also offer configurable overload protection, which R&S says is a unique feature for instruments in the under-€1000 price class. The two-channel NGE102 and the three-channel NGE103 employ fan control to ensure that they are quiet. The power supplies deliver up to 33.6W output power per channel with low ripple. They offer a per-channel output voltage of up to 32V and output current of up to 3A.


All channels are galvanically separated, earth free and electrically identical, so that even complex switching operations can be performed without grounding problems. Users can switch the channels in series or in parallel. Two channels switched in series deliver an output voltage up to 64V, three channels up to 96V. When the channels are switched in parallel, the instrument supplies a maximum of 6A for two channels and 9A for three.

Flexible protection options include user-specified enter maximum values for voltage, current and power, separately for each channel. The electronic fuses can also be linked with other channels. All linked channels will be switched off as soon as one of the linked channels reaches a limit. Users can define a delayed response time to prevent the power supply from switching off in the event of a short current spike.


The small, compact power supplies can be used on the benchtop or mounted in a 19 in. rackmount (with a rack adapter). They can be remote controlled via the integrated USB interface or optionally via LAN or WLAN. A digital trigger option is also available. A key code activates the options.


These are part of Rohde & schwarz growing “value” instrument range and are available through distribution channels, with prices starting at €650.


Rohde & Schwarz; www.rohde-schwarz.com/ad/press/nge100