Panasonic TV Camera Model WV-71 - What is inside

What you have always wanted to know about what is inside the Panasonic TV Camera Model WV-71. This is Made In Japan, use a TV camera tube not a  CCD device. Has video over DC connection, thus saving one extra power cable.  You just need a video cable to connect the camera to a video recording or TV screen. This is very useful considering that the camera is usually installed in remote locations far from the monitoring location.



Panasonic TV Camera Model WV-71 TV
Camera Tube KV-19NA





Panasonic TV Camera Model WV-71



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Intel R80286-8 CPU Chip in PLCC ZIF Package

Intel R80286-8 CPU in a PLCC ZIF package.

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Intel C8008-1 CPU chip.



Intel C8008-1 CPU Chip Made In Malaysia in 1978 Week 2

 This is a Intel C8008-1 CPU chip,  the first 8bit microprocessor made by Intel.  It is use here to control a teletypwriter. The chip has been stored for many years in a black antistatic foam. Over the years chemical from the foam has reacted with imperfections in the gold plating on the pins and has eaten away the lower half of all the termination pins ( the half that was inserted into the foam ). This fact that this happens makes an interesting study of materials science especially where duralability is concern.

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HP iPaq Pocket PC - Should It have been called iPhone instead?

About the year 2000, Hewlett Packard has a product called the iPaq Pocket PC. It operates on Windows Mobile. Among the features, voice recording, wifi, maybe bluetooth, sim card ( for voice ? or 2G access? ). Color LCD touch screen.

If looks more like a early smartphone than anything else, too bad HP did not called it the iPhone but called it the iPaq. Why HP chose the name iPaq rather iPad is a big mistake as we now know that Apple blockbuster tablet PC is called the iPad.

Here is some pictures of what could have be the percursor to today tablet PCs.

This probably the wireless or 2G phone module

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3 Watt Luxeon LED Bulb Review

This 3 Watt "Luxeon" LED bulb has the MR11 pins loosen after a few round of insertion into a lamp holder for testing.

So I decided to dissassemble it to take a look at the reason for failure.

These are the major components: the bulb base made from nylon, the constant current source module, the Luxeon 3 Watt LED, the LED housing which is essentially the heat sink, the white nylon reflector, the lens and the lens retainer ring.

An interesting thing to note is that the Luxeon LED is not screwed to the heat sink, but is pressed against the heat sink via the nylon reflector using the lens retainer ring. This probably save some screws and assembly time.

The cause of the MR11 pin loosening? Well, the adhesive that hold the constant current PCB module does not adhere too well to the nylon base and so has come off as shown.

Some electrical characteristics of the 3 Watt Luxeon LED bulb: take input voltage of 6 to 12 AC/DC. Current at 6V is 500mA. Current at 12V is 250mA.

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