# Rohde & Schwarz NGE103B Three-Channel 100 W DC Power Supply # Rohde & Schwarz NGE103B Three-Channel 100 W DC Power Supply ## Key Features At A Glance - Two-channel (NGE102B) or three-channel (NGE103B) configuration with 100% electrically equivalent output channels - 0 V to 32 V and 0 A to 3 A per channel, with up to 33.6 W of output power per channel - Series and parallel operation for higher voltage or current — up to 64 V/96 V and 6 A/9 A across the series - All output channels galvanically isolated, earth-free, and short-circuit-proof - Per-channel electronic fuse (OCP), overvoltage (OVP), overpower (OPP), plus overtemperature (OTP) protection - USB (CDC/TMC) standard; optional LAN (LXI), wireless LAN, and 4-bit digital trigger I/O - 3.5" QVGA display with color-coded constant-voltage (green) and constant-current (red) status - EasyArb programmable V/I/time sequences and EasyRamp controlled output-voltage ramp - EasyArb and EasyRamp functions with tracking, FuseLink and five save/recall memory keys The R&S NGE100B power supply series consists of the R&S NGE102B two-channel power supply and the R&S NGE103B three-channel power supply, with both instruments providing up to 33.6 W of output power per channel. These are robust, high-performance, affordable instruments that offer high efficiency combined with low ripple, plus a variety of comfort functions not usually found in this class of power supply. A defining trait of the series is that all output channels are 100% electrically equivalent — each channel offers the same voltage, current and power, so there is no limitation in selecting a channel for a specific application, and every channel can be treated as a separate power supply. A DC power supply provides controlled electrical power to a device under test, and the NGE100B series is tailored to be used in education, labs and system racks. In educational settings the robust 4 mm front connectors are designed to survive generations of students, and the short-circuit-proof outputs protect the instrument during early hands-on work. For applications that require the user to vary voltage or current during a test sequence — for example to simulate the different charging conditions of a battery — the EasyArb function allows time/voltage or time/current sequences to be programmed manually or via the external interfaces. When the instrument is destined for a rack, remote control and rack integration round out its suitability for system use. Because every channel is galvanically isolated and earth-free, the channels can be combined to drive bipolar circuitries that need, for example, +12 V/-12 V, while avoiding ground problems in complex DUTs. That combination of held inventory and hands-on verification of used instruments is the foundation of how we support engineers, labs and technicians. ## Brand Heritage Rohde & Schwarz is an independent, privately held electronics group headquartered in Munich, Germany, founded more than 80 years ago. It maintains a sales and service network in more than 70 countries. It has operated under the Rohde & Schwarz name throughout its history, with no major corporate name changes, acquisitions, or rebrands affecting the brand identity. ## Compare Other Models in This Series The R&S NGE100B power supply series is offered as two models: the R&S NGE102B with two output channels and the R&S NGE103B with three output channels. Both deliver up to 33.6 W per channel, and in both models every channel is galvanically isolated, earth-free, short-circuit-proof, and 100% electrically equivalent — each channel provides the same 0 V to 32 V and 0 A to 3 A and can be treated as a separate supply. Because the channels are electrically equivalent, they can be combined in series for higher voltage or in parallel for higher current, and both models share the same protection set (OCP, OVP, OPP, OTP), the same 3.5" QVGA display, and the same EasyArb and EasyRamp functions. The choice between the two models is primarily a question of how many channels and how much combined voltage, current and total power an application requires. Each model below is its own dedicated product page with condition-matched pricing for the new unit you select. Choose the channel count and power level that fit your application, then review that model's page for its specifications and current availability. The two models differ in channel count and combined output capability. The R&S NGE102B provides two channels for a total of 66 W, and combining its channels yields up to 64 V in series or 6 A in parallel. The R&S NGE103B provides three channels for a total of 100 W, reaching up to 96 V in series or 9 A in parallel when all three channels are combined. Per-channel performance is identical across the family — 0 V to 32 V, 0 A to 3 A, and 33.6 W per channel — along with the shared protection functions, display, interfaces and special functions. The comparison table below summarizes the channel-count, total-power, and series/parallel differences between the NGE102B and NGE103B. Model Channels Total Output Power Max Voltage (Serial) **NGE103B** 3 100 W 96 V NGE102B 2 66 W 64 V Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - Set of power cables - Quick start guide ## Product Core & Specifications Specification Value Outputs Output channels 3 (all galvanically isolated, not connected to ground) Total output power max. 100 W Maximum output power per channel 33.6 W Output voltage per channel 0 V to 32 V Maximum output current per channel 3 A Maximum voltage in serial operation 96 V Maximum current in parallel operation 9 A Voltage ripple and noise (20 Hz to 20 MHz) typ. < 1.5 mV (RMS), < 20 mV (peak-to-peak) (meas.) Current ripple and noise (20 Hz to 20 MHz) < 2 mA (RMS) (meas.) Load regulation, voltage (load change 10 % to 90 %) < 0.1 % + 20 mV Load regulation, current (load change 10 % to 90 %) < 0.1 % + 5 mA Load recovery time (10 % to 90 % load change within ± 30 mV of set voltage) < 200 µs (meas.) Line regulation, voltage (±10 % change in mains voltage) < 0.1 % + 20 mV Line regulation, current (±10 % change in mains voltage) < 0.1 % + 5 mA Output voltage overshoot at turn-off of mains power and active channel output < 100 mV Programming resolution, voltage 10 mV Programming resolution, current 1 mA Programming accuracy, voltage < 0.1 % + 30 mV Programming accuracy, current < 0.1 % + 5 mA Output Measurements Measurement functions voltage, current, power Readback resolution, voltage 10 mV Readback resolution, current 1 mA Readback accuracy, voltage < 0.1 % + 20 mV Readback accuracy, current < 0.1 % + 5 mA Temperature coefficient, voltage (+5 °C to +20 °C and +30 °C to +40 °C) < 0.02 % + 5 mV per K Temperature coefficient, current (+5 °C to +20 °C and +30 °C to +40 °C) < 0.02 % + 3 mA per K Ratings Maximum voltage to earth 150 V DC Maximum counter voltage (same polarity connected to the outputs) 33 V Maximum reverse voltage (opposite polarity connected to the outputs) 0.4 V Maximum reverse current 3 A Remote Control Command processing time ≤ 30 ms Programming settling time, positive voltage change, no load (within 1 % of final value) 10 ms + command processing time Programming settling time, positive voltage change, full load (resistive) 10 ms + command processing time Programming settling time, negative voltage change, no load 500 ms + command processing time Programming settling time, negative voltage change, full load (resistive) 10 ms + command processing time Protection Functions Overvoltage protection configurable for each channel Overpower protection configurable for each channel Overcurrent protection (electronic fuse) configurable for each channel Response time (Iload > Iresp × 2) < 10 ms Fuse linking (FuseLink function) yes Response time of linked channels < 100 µs + response time of linked channel Fuse delay configurable for each channel, 10 ms to 10 s (10 ms increments) Overtemperature protection yes Special Functions Output ramp function EasyRamp EasyRamp time 10 ms to 10 s (10 ms increments) Arbitrary function EasyArb EasyArb parameter voltage, current, time Maximum number of points 128 Dwell time 10 ms to 600 s (10 ms increments) Repetition continuous or burst mode with 1 to 255 repetitions Trigger optional (R&S®NGE-K103); manually, remote control or via optional trigger input Trigger and control interface optional (R&S®NGE-K103); digital I/O Minimum trigger interval 10 ms Trigger response time < 150 ms Trigger level TTL, max. 5 V Edge direction rising, falling Display and Interfaces Display 3.5"/QVGA Front panel connections, channel outputs 4 mm safety binding posts Remote control interfaces, standard USB-TMC, USB-CDC (virtual COM) Remote control interfaces, optional (R&S®NGE-K101) LAN (LXI) Remote control interfaces, optional (R&S®NGE-K102) wireless LAN 802.11 b/g/n, 2.4 GHz; operating mode: client Trigger and control interface, optional (R&S®NGE-K103) digital I/O General Data Operating temperature range 0 °C to +40 °C Storage temperature range –20 °C to +70 °C Humidity (noncondensing) 5 % to 80 % Mains nominal voltage 115 V/230 V (± 10 %) Mains frequency 50 Hz/60 Hz Maximum power consumption 180 W Mains fuse, 115 V AC power source IEC 60127-2/5 T 5 A 250 V Mains fuse, 230 V AC power source IEC 60127-2/5 T 2.5 A 250 V Dimensions (W × H × D) 222 mm × 97 mm × 310 mm (8.74 in × 3.82 in × 12.21 in) Weight 5.0 kg (11.00 lb) Rack installation optional (R&S®HZC95), ½ 19" Recommended calibration interval (operation 40 h/week in the full range of the specified environmental conditions) 1 year > **Important:** Wireless LAN functionality is not available in all regions due to country-specific regulations. > **Important:** The optional interfaces (R&S®NGE-K101 Ethernet/LXI, R&S®NGE-K102 wireless LAN, R&S®NGE-K103 digital trigger I/O) have their hardware pre-installed but are activated with a keycode that has to be ordered separately. > Recommended pairing: use the R&S HZC95 rack adapter (½ 19", 2 HU) to mount the supply in a 19" rack, including in combination with R&S HMC test instruments. ## About this New unit This is a brand-new, factory-sealed unit, supplied exactly as it arrives from the manufacturer and backed by the full manufacturer warranty. For the exact configuration, available options, included accessories, or current lead time for your application, our Test Architects can confirm the details before you order. ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 1575.0 USD - **Vendor:** Rohde & Schwarz - **Type:** Dc Supply - **Tags:** DC Power Supply, Manufacturers, Power Supplies & Loads, Rohde & Schwarz, sync_12_12 ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1575.00 USD | In stock | ## Images - Rohde & Schwarz NGE103B Three-Channel 100 W DC Power Supply --- > Source: [ValueTronics](https://valuetronics.com/products/nge103b-rohde-schwarz-dc-power-supply-new) > Updated: 2026-06-20