Monthly Archives: December 2007

Laser Power supply

This is first version of laser diode power supply. I borrowed circuit from die4laser.com and changed it a bit. It is classic current source using n-channel power device. It is better to use p-channel devices here, but now I have … Continue reading

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DVD laser

There are lots of rumours in the internet about high power DVD lasers and about hacking them. I decided to test some of the rumours. Theoretically, there are two lasers in modern DVD recording device. Power of the laser must … Continue reading

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My workbench

I would like to introduce part of my workbench. It is computer side of my workbench. There is electronics workbench, but it is not described here. I’ve made some order here before making pictures- regularly there is a big mess … Continue reading

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Battery of capacitors

From computer tomograph PSU, I removed battery of capacitors. It is 12 high power electrolytic capacitors. 6 x 12000μF and 6 x 8200μF. All caps working ant 400V (450V surge). Total 121200μF (0,12F). We can charge them to about 400V … Continue reading

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Computer tomograph

I achieved personal top record in braking electronics. Today (Nov 14th) I disassembled computer tomograph. As whole device was too big to fit in the van, I don’t have classic photos of the doughnut (donut). I have only partly disassembled … Continue reading

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ATMEGA USB 13

Maybe I have some superstitious beliefs. So the are no Atmega USB 13 blog entry and no project #13.

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ATMEGA USB 12

Next toys connected to my AVR-USB testing board are two Freescale semiconductors (ex Motorola) accelerometer chips: MMA3202D and MMA7260QT. First is “catastrophic” accelerometer chip with high-G (100g X-axis and 50g Y-axis) sensor. If you apply such acceleration to human body … Continue reading

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