by Steve Roberts, Recom A quick review shows the sources of inefficiencies in both linear and switching power supplies. Most engineers know that one reason switch-mode power supplies have become widely used is their high energy efficiency. But many engineers don’t know power supply technology well enough to explain the sources of switch-mode efficiency and […]
AC-DC
Power quality analyzer checks three-phase lines—and doubles as BS detector for false energy efficiency claims
If you want to really see what’s happening on power lines, you need an instrument that can generate a phasor diagram of the line voltages and currents. An instrument able to do that and much more recently became available from Keysight Technologies. Engineers can use the firm’s IntegraVision PA2203A four-channel power analyzer to observe three-phase […]
Orion Fans Maximizes Airflow, Minimizes Noise with New 70mm Fan Package
Orion Fans has developed a series of 70mm tubeaxial DC fans that deliver high airflows ranging from 19 CFM up to 60 CFM with low noise levels of 49.5 dB down to 29.0 dB. The new OD70 family of 70mm fans maximize performance in a wide range of enclosure applications. Nine different fan models are […]
130-W ac-dc supplies billed as world’s smallest
XP Power has announced the high efficiency ECP130 series of miniature open-frame AC-DC power supplies, with safety approvals for the ITE and medical equipment markets. The units deliver the full 130 W output with only 10 CFM of forced air cooling and are also able to provide a high convection cooled rating of 100 W, […]
24 – 60 Watt AC/DC power supply modules from Traco
The TMM Series of fully encapsulated 24 – 60 Watt AC/DC power supply modules feature a reinforced/double I/O isolation system according to latest medical safety standards 60601-3 3rd edition for 2 x MOPP (Means Of Patient Protection). The high efficiency and the use of highest grade components make the units suitable for an operating temperature […]
ON Semiconductor Demonstrates New Qualcomm Quick Charge 3.0 Compliant Charger
ON Semiconductor (Nasdaq: ON), driving energy efficiency innovations, has introduced a reference design implementing the new Qualcomm® Quick Charge™ 3.0 protocol. The new protocol provides significant efficiency improvements over the existing Quick Charge 2.0 solution. The high efficiency, small form factor reference design supports the Quick Charge 3.0 High Voltage Dedicated Charging Port (HVDCP) Class […]
Orion Fans Offers Industry’s Lowest Cost Cage Nuts
Orion Fans now offers the lowest cost round and square hole snap-in cage nuts on the market. Orion’s OCN Series snap-in cage nuts make it easy to mount equipment into square or round holed 19-inch racks. The heavy duty, lack zinc-plated cage nuts allow for a better strength-to-weight ratio than threaded holes, and provide the […]
Convection-cooled 250-W AC-DC supplies fit in 3x 5-in. space
XP Power has launched the CHD250 AC-DC power supply series of ultra-efficient 250 Watt convection cooled single-output units for applications that require medium power in an open frame, fan-less design. With a compact 3 x 5” standard footprint that fits within a 1U height, the series meets international safety approvals for industrial and medical equipment. The […]
New Class of Non-Isolated, Bidirectional Bus Converter Modules (NBMs)
Vicor Corporation (NASDAQ: VICR) announced the introduction of a new family of non-isolated, fixed conversion ratio, bidirectional bus converter modules (NBMs). Utilizing Vicor’s Converter housed in Package™ (ChiP) packaging technology, and exploiting technical improvements in magnetic and semiconductor technologies, these NBM™ modules feature improved efficiency and power density when compared to contemporary best-in-class isolated bus […]
Boost converters for single-cell li-ion batteries
ams AG, a provider of high performance sensors and analog ICs, introduced the AS1383, an ultra-compact switching boost converter which offers high efficiency and helps extend run-time in applications powered by a single-cell lithium-ion battery. The converter provides outputs of between 2.7V and 5.0V from a 2.7V-5.5V input voltage range. It is available with an […]