Roberts Warr Electronics News & Resources

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.

The new 400-watt MPM-842P medical grade has been introduced by Magic Power Technology Inc. This device is designed for medical equipment that require higher operating power.

The device is compliant with UL 60601-1 and IEC 60601-1, meets EMI IEC 60601-1-2 Class B, operates over a wide 90 to 264VAC input range, and provide short-circuit, over voltage and thermal protection.

The MPM-842P is a great choice for medical applications and offers competitive densities without performance deratings from 0 to 50°C. The device has active power factor correction, CE Mark for the European Low Voltage Directive, isolating the groundings between primary and secondary.

A new inductor technology, much more efficient than the previous one, has been announced by West Coast Magnetics.

It combines the low DC resistance of a foil wound inductor with the low AC resistance of a litz wire wound inductor. The technology fits with the newer classes of silicon devices designed to operate at current levels of 100 amps and up and at frequencies over 10 Khz.

EcoLEDLighting has recently introduced fully dimmable MR16 lamp replacements. They reduce heat output by 80% and use 75% less energy.

To fulfil the specific requirements for this new technology, EcoLEDLighting needed to find a company that was able to meet the reqirements. Powerstax provided systems comprised of a high efficiency, ultra-compact 10W AC to DC, universal input voltage and encapsulated power supply. The product will be a lead-in, lead-out “lump in a cord” design and will have a remote control interface.

The new 150-watt MPD-815H 24V DC input to ATX output power converter has been introduced by Magic Power Technology Inc. The device is RoHS compliant, fits within 1U height constraints and is designed to be invention cooling.

It provides U-channel chassis for heat conduction. The design increases the performance, reduces the dust and has no noise. The MPD-815H operates over 18 to 36 VDC input range and provides over voltage and thermal protection.

The TSP Series by Power Sources Unlimited provide good power even in the most difficult factory conditions. They have rugged metal case, complete with shock and vibration proof construction. The device is the best choice for power
sensitive loads in industrial process controls, machine tools or other hard applications.

Standard models are available with adjustable output voltages of 12, 24 and 48VDC, and have ratings up to 25A. The operating temperature is between -25 degrees C to +70 degrees C. The power supplies provide thermal overload protection and have remote on/off.

The new device by Acopian meets the safety regulations and applications requiring allowance for environmental conditions. The enclosures provide protection from dust, other airbone particles, dripping, splashing liquids and prevent accidental contacts by personnel.

To the initial offerings, power supplies with higher wattage outputs have been added. Outputs up to 30 watts are available from mini power supplies mounted in NEMA enclosures with a footprint of 4 3/4″ x 4 3/4″.

The single-output device by Acopian provide from 3.3 to 125 volts and deliver up to 288 watts in applications where other supplies won’t fit.

Power factor correction and output inhibit capability are features met with Models with outputs greater that 120 watts. The temperature of all models varies from 0 to +71 degrees Celsius. Amongst other features there are: remote sensing capability, overload, over-voltage, short-circuit and thermal protection.

The kHz switchers are very small (1.7 x 3.5 x7 inches). They include an input filter, have line regulation of ± 0.05 percent, load regulation of ±0.05 percent, and transient response of 300 microseconds for a return.