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LED drivers from Mean Well HLG-480H

10.05.2017

Mean Well has expanded its line of highly reliable LED drivers with the launch of the new HLG-480H series of 480W output power converters. Power supplies according to the type of stabilization of output parameters are manufactured in two versions: with current stabilization (HLG-480H-C series) and with dual mode of voltage and current stabilization (HLG-480H series).

Both variants of the HLG-480H have either manual output adjustment or 3-in-1 dimming (PWM, 0-10V, Resistance) and programming (Smart Timer Dimming).

Power supplies HLG-480H have high technical parameters and a 7-year manufacturer's warranty. The new converters are designed for high-power outdoor and industrial LED luminaires, for architectural and decorative lighting of buildings and other applications where a powerful, reliable, efficient, fanless power supply is required that is resistant to various weather phenomena.

Main technical parameters of HLG-480H and HLG-480H-C series:

Output power 480W
Output current (for HLG-480H-C) from range: 1400; 1750; 2100; 2800; 3500 mA
Output voltage (for HLG-480H) from the range: 24; thirty; 30; 36; 42; 48 V
KM>0,97
Efficiency 95%
Input voltage range 90-305V
Temperature range -40°С...65°С
IP65 / 67
Warranty 7 years

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Wearable biosensors from old CDs 30.07.2022

As online music listening services become more popular, CDs are falling into disuse. However, some of them can still be used, since the gold foil contained in them can be used in the production of wearable biosensors.

Although CDs are made primarily from polycarbonate, they contain a thin layer of foil. Most CDs have this aluminum foil, although some use gold.

Because thin layers of gold are also used in flexible skin-attached biosensors, researchers at Binghamton University in New York asked if gold from discs could be used for this purpose.

Under the guidance of graduate student Matthew Brown and Associate Professor Ahyon Koch, a method was developed in which gold CDs were first soaked in acetone for 90 seconds, which destroyed the polycarbonate, weakening the bond between it and the foil, then a sheet of polyimide adhesive tape was applied to the foil. which both foil and gold peeled off from polycarbonate.

Using a commercially available fabric cutting machine, the gold foil and its tape backing were cut into flexible patterns that can be repeatedly applied to and removed from the skin. In combination with other electronics, these biosensors can be used to monitor the electrical activity of the heart and user muscles, as well as to measure lactose, glucose, pH and oxygen levels. All data can be sent to a smartphone via Bluetooth.

The entire fabrication process takes only 20-30 minutes, does not require expensive equipment, and costs about $1,5 per sensor.

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