29 Sep '12, 6am

Battery Guard for Emergency Lights,...

Battery Guard for Emergency Lights,...

As the name implies,emergency light is a source of light available during an emergency.It is an automatic system in which a rechargeable battery operated light source turns on as soon as the ac mains fail.When the grid supply is restored,the lamp is turned off. An emergency light essentially consists of a source of electricity – a rechargeable battery pack and an automatic sensing circuit to check the presence(or absence) of mains supply.The sensing circuit connects a lamp (or a compact fluorescent tube inverter) circuit in the event of mains failure and disconnects it when the mains supply is restored.When ac mains supply is available,a charger circuit charges the battery pack to keep it in top condition(fig 2). Emergency Lights Guard Circuit Diagram Over the years,emergency lights have become better designed and more reliable. However, they retain a few weak facilities. ...

Full article: http://www.seekic.com/circuit_diagram/Control_Circuit/Bat...

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High voltage #regulator circuit with #optocoupler...

High voltage #regulator circuit with #optocoupl...

seekic.com 29 Sep '12, 6am

The circuit is shown as the figure. Usually, the drive tube needs to use transistor (Figure 9013) with higher withstand. W...

Metro: Emergency shuttle bus for Newburn

Metro: Emergency shuttle bus for Newburn

nexus.org.uk 28 Sep '12, 4pm

An emergency shuttle bus for the Newburn area will start running on Saturday, 29 September to help people left without pub...

【スマホ(全般)】 Can Sony keep your smartphone battery alive longer?

【スマホ(全般)】 Can Sony keep your smartphone battery...

sfluxe.com 29 Sep '12, 6am

that smartphones are having on everyday lives. What used to be a device for making phone calls is now the first thing cons...

Philippines Sends More Troops To Guard Disputed...

defensenews.com 30 Sep '12, 6pm

MANILA— The Philippines has deployed 800 more Marines and opened a new headquarters to guard its interests in the disputed...

Earning Tomb Guard Badge an honor for soldier

armytimes.com 30 Sep '12, 4pm

http://www.armytimes.com/news/2012/09/ap-earning-tomb-guard-badge-honor-093012/ Earning Tomb Guard Badge an honor for sold...

Foldable battery hopes to change the industry #...

element14.com 01 Oct '12, 11am

Breaking or cracking displays can thoroughly ruin a device. Bendable displays like those in e-readers have been successful...