Monthly Archives: May 2005

PCI express cards

It is written: “Intel, in partnership with several other companies which include the likes of IBM, Dell, Compaq, HP and Microsoft, recently introduced what will be the new standard for PC I/O in the years to come; PCI Express (formerly … Continue reading

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Repairing LCD monitors at home

From time to time I acquire “dead” LCD monitors. If you start monitor and see normal image and some horizontal or vertical line (black or color) this means that monitor is really dead. In very rare case you can press … Continue reading

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I have very big mobile phone

In my closet I found very old mobile phone. It is Motorola Associate 2000. The power supply and antenna is lost. But the most interesting part, that the phone is still working. Of course I can’t make calls, but I … Continue reading

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Collection of tubes and lamps

From time to time, I collect some interesting radio tubes, lamps and other strange devices. Here is small part of the collection: From left to right. 8MHz crystal oscillator. Not very old- 1984. But look at these nice gold plated … Continue reading

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HiFi audio amplifier using Burr-Brown op amp

“Burr-Brown is known as an industry leader of high-precision, audio quality op amps. These ICs can be used in a variety of audio applications.” I am using OPA541 in metal TO-3 package. Continuous current output 5A (10A peek), internal power … Continue reading

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Slowest Pentium CPU

I don’t what to write this day. Lots of hard work at yard. Made a nice paddock for my horse in neighbour’s yard . So, I think I have the slowest Intel Pentium processor ever made. This nice CPU can … Continue reading

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Thermocontroled fan

I was tired of fans running and full speed and causing lots of noise. For my self-made audio amplifier I designed thermocontrolled fans. Why to move air if you amp is playing calm music? The total amp output power is … Continue reading

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Feel the difference!

Look at this photo: What you can see here? Some 168 pin DIMM? The first 3 looks like devices from same family… but they are very different. From left to right: 1. It is ROM! “Phaser 850 Ver 1.1 Roman … Continue reading

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Checking power MOSFET with simple tester

Having lots of second hand power mosfets? These interesting electronic components are very useful in hobby constructing. It replaces relays and simple transistors. But how to test them quickly? All you need is simple tester. Almost every tester have buzzer … Continue reading

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LCD module on printer port

I found LCD module (display) from Epson ECM-A0404. It looks like 20×2 module. Module has 16 pin connector… hmm… looks like standard LCD module. I connected wires according usual pin-out. But, oops!, some sort of short circuit. At first glance, … Continue reading

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