Showing posts with label AC-DC-Convertors. Show all posts
Showing posts with label AC-DC-Convertors. Show all posts

Tuesday, October 23, 2012

250 watt AC-DC power supply - Artesyn Emerson

A 250 watt, open frame, single output AC/DC power supply in an industry standard 4 x 7 format. This chassis mount power supply has a 85-264 AC volt Wide-range input AC input with power factor correction.

NLP250N-99S12J Artesyn/Emerson

 It is medical rated with an operating temperature range of 0 - 70 °C and up to 86% efficiency. The NLP250N-99S12J is Rohs 6/6 compliant.

250 watt  AC-DC power supply - Artesyn Emerson

Some Specs
  • AC Input - Wide-range Inputs:    85 - 264 AC 
  • Outputs:   - 12 Volts, 21 Amps, 250 Watts.
  • Efficiency:  -  86% 
  • Dimensions (L x W x H) -    7 x 4 x 1.5 in
Sager Power Systems
Sager Power Systems is a specialized group within Sager Electronics focused solely on power supplies. They offer over 15,000 world-class AC/DC and DC/DC standard solutions from leading power supply manufacturers, and is able to evaluate and specify standard and value added solutions.

Friday, July 13, 2012

CAR1248FP front-end power supply - GE

Efficient and Compact, the CAR1248FP is a front-end power supply module for distributed power applications. The CAR Series of front-end rectifiers provide highly efficient isolated power from worldwide input mains in a compact 1U industry standard form factor providing an unprecedented power density of 30W/in3.

CAR1248FP front-end power supply - GE

It takes an AC input and outputs a regulated single output voltages of 48Vdc. Enclosed in 1U package it has 1200 Watts of power capability.

CAR1248FP front-end power supply - Lineage

It has all the protection you need including overvoltage, overcurrent and overtemperature.

Features Include
  • High Power Density (19W/in²)
  • 91% typical efficiency
  • N+1 Redundancy / Hot-Swap Operation
  • 3.3VSB, Active Load Sharing, I²C and PMBus
  • Remote On/Off and Remote Sense functions
(Lineage Power - Power Conversion Solutions)

"Energy-efficient AC/DC and DC/DC embedded power, indoor/ outdoor energy systems."

delabs Notes

I am writing it here again, i was overwhelmed by the Cherokee Power Supply Design, which i saw in the Tek Logic Analyzer 1240, i was an R&D engineer and also worked on a DMM Option for 2235.

When i came first online i found that Cherokee is part of Lineage, today i find it is part of GE Energy.

Tuesday, September 27, 2011

High Efficiency Step Down Isolated Supply

60W AC-DC adapter, synchronous rectification, fixed frequency current mode PWM controller. Very Low Quiescent Burden, Efficiency above 85%. That's Green.

STMicroelectronics - EVALSTSR30-60W. Synchronous rectification using L6668 and STSR30.

EVALSTSR30-60W: 60W AC-DC adapter

EVALSTSR30-60W: 60W AC-DC adapter

The converter works in both Continuous and Discontinuous conduction mode depending on the input voltage (the circuit has a wide input voltage range) and the output load. The 68-kHz switching frequency provides a good compromise between the transformer size and the harmonics of the switching frequency, optimizing input filter.

The input section includes protection elements (varistor, fuse and NTC for inrush current limiting), a standard Pi-filter for EMC suppression, a bridge and an electrolytic bulk capacitor as the front-end AC-DC converter. The transformer is a layer type, uses a standard ETD34 ferrite core and is designed to have a reflected voltage of 95V. The power MOS is a 700V - 1Ω and a transil clamp network is used for leakage inductance demagnetization.

From STMicroelectronics