Monthly Archives: November 2006

Li-ion and Li-polymer charger

My old linear Li-ion charger somehow blowed up. I found small hole in the chip. As my all batteries were exhausted, I need to build new charger. I voted for new technology- switching charger for Texas Instruments. I selected BQ24103 … Continue reading

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Video multiplexer

When we have more than one video camera and we need to watch all images at same time we can place separate monitor for each camera. But person watching all this stuff will became mad after some time. Also, we … Continue reading

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Kenwood TK-248

I have old, used handheld Two-way Radio Kenwood TK-248. This is quite old, max 5W power output, 136(132?)-174MHz VHF band transceiver. The batteries are almost dead, but the radios is still working. Also I have wall-cube adapter to feed device … Continue reading

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Outdoor housing

Everybody knows outdoors security cameras hanged on poles, house corners and other places. Typically it is white, gray of silver colored boxes with small windows in the front. Like these: What is inside this box? Here is one opened, but … Continue reading

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Night shot video

For my video surveillance project I needed special video camera to make video shots in the dark. One local company offered YOKO YK-3B41 or YK-3B43 video cameras. The body, lenses and IR emitting diodes are located in the same box. … Continue reading

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