DC Power supply, PSW 40-81, GW INSTEK
The PSW 40-81 is a single-output multi-range programmable switching DC power supply covering 1080W. The CV/CC priority selection is a very useful feature for DUT protection. The conventional power supply normally operates under CV mode when the power output is turned on. This could bring a high inrush current to the capacitive load or current-intensive load at the power output-on stage. Taking the I-V curve verification of LED as an example, it becomes a very challenging task to perform this measurement using a conventional power supply. With the LED connected to a power supply under CV mode as the initial setting, when the power output is turned on and the voltage rises to the LED forward voltage, the current will suddenly peak up and exceed the preset value of current limit. Upon detecting this high current, the power supply starts the transition from CV mode to CC mode. Though the current becomes stable after the CC mode is activated, the current spike occurred at the CV and CC crossover point may damage the DUT. At the power output-on stage, it is able to run under CC priority to limit the current spike occurred at the threshold voltage and therefore protect DUT from the inrush current damage.
Features
- Voltage rating: 40V, Output power rating: 1080W
- Multi-range voltage and current combinations in one power supply
- CV/CC priority being particularly suitable for the battery and LED industry
- Adjustable slew rate
- High efficiency and high power density
- 1/2 rack mount size design for 1080W
- Standard interface: LAN, USB, Analog control interface
- Optional interface: GPIB-USB adaptor, RS232-USB cable
- LabView driver
