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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