Rohde & Schwarz NGL201 Single-channel power supply 60W

The Rohde & Schwarz NGL201 is a single-channel programmable DC power supply which delivers up to 60 W of output power per channel.
The output channels are floating, galvanically isolated and protected against overload and short circuits.
Thanks to their fast recovery time of < 30 μs and minimum overshoot even during a demanding load change, the Rohde & Schwarz NGL201 power supply is ideal for powering IoT devices and other battery-operated devices.
With a resolution of up to 6 1⁄2 digits when measuring voltage, current and power, the Rohde & Schwarz NGL201 power supply is perfect for characterizing devices that have low power consumption in standby mode and high current in full load operation. In many cases, an additional digital multimeter is no longer necessary.

The linear two-quadrant design of the output stages allows the Rohde & Schwarz NGL201 power supply to operate as a source and sink with minimum residual ripple and noise, ideally supporting the development of power amplifiers and MMICs.

Readings with up to 61⁄2 digit resolution
With a resolution of up to 61⁄2 digits when measuring voltage, current and power, the R&S®NGL200 power supplies are perfect for characterizing devices that have low power consumption in standby mode and high current in full load operation. The entire measuring range is covered without having to switch ranges. This results in faster measurements. In many cases, an additional digital multi- meter is no longer necessary.

Galvanically isolated, floating channels
Both channels of the R&S®NGL202 are completely iso- lated from each other and are not connected to chassis ground. They can be used as independent power supplies or be cascaded. The channels can be connected in parallel to achieve higher currents or in series to achieve higher voltages. Connecting the two channels makes it easy to power bipolar circuits that might need +12 V/–12 V, for example.

Output stage isolated with relays
Switching off an output channel of a standard power sup- ply usually simply switches off the output voltage – the output stage of the supply remains connected to the out- put terminals. The R&S®NGL200 uses relays to isolate the power supply circuits from the connector sockets.

Two quadrants: operates as source and sink
The two-quadrant architecture of the power supplies allows them to function both as a source and a sink and simulate batteries or loads. The power supply automatically switches from source mode to sink mode. As soon as the externally applied voltage exceeds the set nominal voltage, current flows into the power supply. This is indicated by a negative current reading.

Constant voltage, constant current and constant resistance modes
Configuring and regulating the output voltage (constant voltage mode) is the standard application for power sup- plies. However, the R&S®NGL200 power supplies can also be used in constant current mode, with each channel separately configurable. If the configured current level is exceeded, current limiting ensures that only the configured current can flow. The output voltage is accordingly reduced below the configured value. This prevents dam- age to the test circuit in the event of a fault.

When operating as an electronic load, constant resistance mode is also available. In this mode, the power supply behaves like an adjustable resistance over the entire load range. This makes it possible to simulate battery discharge with a constant load resistance, for example.

Variable internal impedance
A power supply should have an internal impedance as low as possible to suppress loading effects on the DUT. How- ever, there are applications where certain battery types need to be simulated in a controlled manner or where it is necessary to simulate the increase in internal impedance as the battery discharges. The R&S®NGL200 power sup- plies support these applications due to their adjustable internal impedance range.