New power-factor corrected (PFC) power supplies have been released by Mean Well for LED lighting applications in the 90 W range. The NPF-90, NPF-90D and PWM-90 series – each with a single output – feature startup times shorter than 500 ms and no-load power consumption less than 0,5 W (less than 0,15 W for NPF-90).
The NPF-90 exploits a constant-voltage (CV), constant-current (CC) design that makes it suitable for the majority of LED lighting applications; the NPF-90D further provides a 3-in-1 dimming function that enables adjustment of light intensity via 0 – 10 V d.c., PWM or resistance signals.
The PWM-90 range uses a CV design and provides a pulse width modulated (PWM) output as well as dimming via a 0 – 10 V d.c. or PWM signal, meaning it is well suited to operation with LED strips or LED luminaries using current limiting resistors and supplying a complete dimming function at the same time.
The units are all categorised Class II (no FG), with an input accepting the full 90 – 305 V a.c. range and an output supplying the most common DC voltages required for LED lighting units or strips. They are housed in 94V-0 flame retardant plastic enclosures with an interior fully filled with heat conductive silicone.
With operating efficiencies up to 91%, the power supplies can operate between -40°C and +70°C using free air convection. Their protection functions include short circuit, overload or over-current, over-voltage and over-temperature. They are certified to internationally recognised UL and EN standards.
Zero drift current shunt monitors Altron Arrow
Power Electronics / Power Management
The NCS21671 and NCV21671 from onsemi are a series of voltage output current sense amplifiers offered in gains of 25, 50, 100, and 200 V/V.
Read more...Schneider Electric partners with Drakenstein Municipality Schneider Electric South Africa
Power Electronics / Power Management
Drakenstein Municipality, situated in Paarl in the Western Cape, is one of the first distribution utilities globally to implement Schneider Electric’s green, SF6-free RM AirSeT switchgear with pure air technology and native digital connectivity.
Read more...E-Mobility: navigate safety, interoperability and conformance Concilium Technologies
Power Electronics / Power Management
Although the concept of electric vehicles is not a new one, the market remains in its infancy, and is not well-regulated or fully operational. This presents a number of challenges for manufacturers throughout the EV and EVSE ecosystem.
Read more...Webinar: Decarbonise with industrial drives
Power Electronics / Power Management
Infineon's TRENCHSTOP IGBT7 and CoolSiC technologies increase the efficiency of your industrial drive design, ultimately resulting in cost savings for you, and a more sustainable future for all.
Read more...Analysis of switch-mode power supply: inductor violations Altron Arrow
Editor's Choice Power Electronics / Power Management
Common switch-mode power supply (SMPS) design errors are discussed, and their appropriate rectification is specified, with details on complications that arise with the power stage design of DC-DC switching regulators.
Read more...Compact PCB-mount SMPS RS South Africa
Power Electronics / Power Management
Traco Power’s 5W PCB-mount switch mode power supply (SMPS) offers high efficiency, and is well suited for a variety of applications in the automation, electronics, electrical and mechanical industries.
Read more...AC-DC brick PSU Conical Technologies
Power Electronics / Power Management
These PSUs have a typical efficiency of up to 92%, and a power factor value of up to 0,99. They are available in 12, 24, 28, 48 and 54 V output versions.
Read more...5 kW switching PSU range Conical Technologies
Power Electronics / Power Management
Mornsun has released a new switching power supply range, the LMF5000-25Bxx, which has a 5000 W capacity, and features universal AC input configurations.
Read more...Reliable charging range Current Automation
Power Electronics / Power Management
Whether you’re powering essential electronics, keeping emergency equipment operational, or maintaining the performance of critical machinery, the need for dependable charging solutions cannot be overstated.
Read more...Microchip expands its mSiC solutions EBV Electrolink
Power Electronics / Power Management
The highly integrated 3,3 kV XIFM plug-and-play digital gate driver is designed to work out-of-the-box with high-voltage SiC-based power modules to simplify and speed system integration.
printer friendly version