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New power supplies for LED applications

24.07.2007

Mean Well has introduced a new series of 60W enclosed AC/DC power supplies ELN-60. Designed for LED applications, ELN-60, unlike the PLN-60 series, does not have a power factor corrector, which has reduced the price of the product.

The fixtures meet the requirements of UL 1310 class 2, which means that in any situation the output will be less than 100 VA or 5 A. This will greatly reduce the hazard to those who install or maintain LED systems.

The IP64 waterproof and dustproof plastic housing protects the electronic parts of these power supplies from dust and moisture, which makes them suitable for use in various adverse conditions: for outdoor installation or in rooms with a high content of dust or moisture in the air. The efficiency of power supplies of the ELN-60 series reaches 88%, the devices can operate in a wide temperature range of -20...60°C, they do not require external airflow.

Standard features include a set of protections against short circuit, overload, overvoltage and overheating. The modules have overload protection of the "DC limit" type. Implemented the ability to adjust the level of protection operation (option). Mean Well ELN-60 power supplies are designed to power running lines and illuminate elements of decorative, architectural, theater and stage lighting, LED electronic displays.

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Random news from the Archive

Mice recognize rats by the smell of tears. 04.04.2018

In order not to get caught for dinner by a rat, mice sniff the mating pheromones in rat tears.

We all know that tears are salty, but few people have heard that tears smell. Meanwhile, some animals - for example, mice - have pheromones in their tears: the lacrimal glands of males produce a special peptide that sets the female in a romantic mood. And sometimes tears set people in a romantic mood, but in people during tearful declarations of love or reconciliation after a quarrel, obviously, other mechanisms work related to empathy towards another person.

Researchers from the University of Tokyo found that rats have a similar "love" peptide. It is also synthesized in the lacrimal glands of adult males and is also intended for females, in which the peptide activates the vomeronasal organ that captures pheromones - a female who smells tears stops going about her business and stops waiting for a gentleman.

But, as it turned out, rat pheromone is felt not only by rats, but also by mice. In response to its smell, neuronal structures associated with defensive behavior are activated in the brains of mice; animals freeze in place, their heart rate slows down and even their body temperature drops. The mouse seems to be trying to hide, and it is not surprising - the rats eat mice, so the mice behave the way they should behave, feeling a predator from which you can hardly escape.
When the receptors in the vomeronasal organ were turned off in mice using genetic engineering methods, they no longer reacted to the mating peptide of rats, that is, the whole point really was precisely in this peptide and how the pheromone detection system senses it.

Probably, the rat peptide can be used to scare away mice, although the authors of the work themselves are more interested in questions of a more fundamental nature. Say, how did it happen that the same molecule triggers such different behavioral responses in two fairly close species? And, if this turned out to be possible in principle, are there other examples in nature of how a potential victim, for the sake of his own safety, “eavesdrops” on the fragrant love confessions of his enemies?

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