I've made some improvements to my laser PSU. I added voltage regulator, max voltage on open laser suppressor, spike suppressor. Also some useless improvements…
I didn't made new PCB, I tested modifications on old board. But all modifications I entered into Eagle software and traced PCB.
I think this “theoretical" PCB is good.
Main difference from old version: […]
I improved my laser PSU design: added voltage regulator, additional schottky diodes, some capacitors and it seams that laser supply is quite stable. I tested it with low power led lasers and several high power IR lasers from CDRW devices. Heat sink on the PCB is not mandatory. Only in rare cases, when powered from […]
My red laser stock was empty. Mainly due to my errors and experiments. As I didn't find spare DVD recorders, I switched to infrared lasers (IR). It is much easier to find powerful IR laser- the source is any CDROM recorder. In newer high speed CDRW devices, lasers are quite powerful.
IR laser beam is invisible. […]
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 only n-channel mosfets on my workbench. They are cheap and easy to get. Modern mosfets […]
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 be strong enough to change the physical properties of recordable media. In this post, I […]
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 here:
Small description of the stuff:
1. Very old, >20″ SGI (Silicon graphics) monitor. It is […]
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 and store about 9696J of energy. Lots of energy. And lots of lethal energy. It […]
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 device images.
Here is the images of “super computer" displaying human body slices:
In fact, it is […]
Maybe I have some superstitious beliefs. So the are no Atmega USB 13 blog entry and no project #13.
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 it will squash to yogurt. Bet in real world such forces are achieved in various […]
|
Place for rent. |