Roberts Warr Electronics News & Resources

The power supplies for photonics applications have been introduced by Schaefer, Inc. These applications require stable voltages under diverse conditions, controlled energy storage and significant surge ratings during start-up cycles.

The power supplies are available in power ratings from 10’s to 100’s of kilowatts and in wide input range.

The device is lightweight, features high density and has either air or water cooling options.

 The source and high efficiency is protected by electronic inrush.

Three product lines the “A” Series, “10A-25A” Series, and “30A-40A” Series have been refined in the “25PPM” option.

The product features an improved temperature, output voltages range from 0 to 62V through 0 to 40kV. The device is for use in plug-in replacement in current and new designs.

“UltraVolt’s new “25PPM” option offers customers the precision they need to stay at technology’s forefront, wrapped in our standard package sizes,” said James Morrison, Executive Vice President.

LAB703-A is the device for electronic research lab. There is one unit with three galvanic separated outputs.

These outputs:

~ 1 - deliver voltage in the range from 0V up to 70V (2,5A / 1,5A)

~ 2 - from 0V up to 35V (2,5A)

~ 3 - from 0V up to 6V (10A)

To generate a +/- output voltage for operation amplifiers, the first two uotputs can be used. The voltages and the currents can be electronicaly preadjusted.

The C/B 6400 Series have been introduced by Schaefer, Inc. The device features a compact and robust design and is space saving. Its applications are to use in communications equipment, military applications, railway controls, transportation, telecommunication systems ans process control systems.

The operating temperature is from -20 degrees C to +75 degrees. All models have overvoltage protection, thermal shutdown with auto restart and current limit protection on the output. The efficiency is up to 95%.

The C/B 6400 Series is available in voltage ranges of 320-640VDC, 450-800VDC and 3-Phase AC input voltages of either 3 x 400VAC or 3 x 480VAC.

The device, provided by Acopian, is rated to 270 watts and its output ranges from 0-6 to 0-100 Vdc. Its applications are:  test equipment, analog systems and R&D. All models are UL recognized. Input ranges are 105-125 or 210-250 Vac, 50-400 Hz.

Operating temperature is from -20 to +71 degrees C whereas the storage temperature is from -55 to +85 degrees C.

The PMP120 Series if 120W AC/DC external power supplies have been introduced by Power Sources Unlimited. The device measures only 6.3″ x 3″ x 1.72 and is available in Class I (with ground) or Class II (no ground) AC inputs.

The Series offers single output models ranging from 12VDC to 48VDC and its leakage current is specified at 150uA maximum at 240VAC. The efficiency of the device is 85%. It makes it possible for the PMP120 to operate quietly, without a cooling fan and makes it very reliable. The operating temperature is from 0 degrees Celsius to +60 degrees.

The new reliable and efficient products by Schaefer, Inc feature an improved AC equipment performance

The AEP-A2000R products’ inputs are of 12VDC, 24VDC and 48VDC, whereas the available outputs are 115 or 230VAC. They also have 4-6ms automatic bypass switch which allow operations from utility power if the DC supply drops out.

All models have user-friendly digital displays, alarms that indicate low input voltage, input overvoltage, short circuit, over temperature, overload and low battery.

The operating temperature is from -30?C to +60?C which allows usage in even very extreme conditions.

Utility, satellite, military, computer, communications, emergency vehicle, marine, and general backup power applications are possible applications of the AEP-A2000R.

The modular linear power systems by Acopian is a very handy device. The only thing that needs to be done is plug in the two umbilical cables and connect AC input power and the load. The power supplies may be mounted to a DIN rail, wall, chassis or cabinet frame.

Input voltage ranges from 105-125 VAC, 50-40 Hz, whereas the output from 5 to 125 Vdc, to 425 watts.

Acopian power systems’ applications are for communications, computer systems, process controls, utility and security systems.