Claimed OU circuit of Rosemary Ainslie

[TinselKoala]

So, is this Ainslie thing put to bed yet?

Getting cranky, are we? Maybe it's time for a nap.

Meanwhile, I finally BLEW UP something with the Ainslie circuit.
Using the same technique as in the last video, irfpg50 mosfet, MUR1100E diode...and...
I was charging a bigger cap, using a much larger inductance as the load (an electromagnet really, 2.35 milliHenry) and I was able to reach over 600 volts, and would have gone higher--but the SHUNT resistor blew up with a sharp bang, and the irfpg50 mosfet failed as well.
I was pulsing with the DP-101, using a short duty cycle (10-20 percent) and sweeping frequencies...I think I was at about 16 kHz or so for the high voltages. 660 volts on the capacitor, about, when the thing blew--some actual power in there. I don't think the cap discharged; it still had the 600 volts on it after the resistor blew.
It was pretty exciting, and also puzzling, as it took a few moments for me to figure out what all had blown.
I'm glad I'm wearing glasses. I also blew up (literally) a heavyduty LED on this circuit.

[TinselKoala]

Hey 0c, maybe you are the one to ask about a little problem I'm having. I'm trying to get a Velleman k8055 board to work with my new-old Ubuntu Linux laptop.
The board works fine with Windblows but I want to use it on linux of course.
I've downloaded this package of code:
http://libk8055.sourceforge.net/
and I seem to have all the prerequisites mentioned: gcc, libusb, newest kernel, and a few they don't mention like swig, python, wxwidgets.
The problem is that I follow the instructions, but the code won't compile. The "make" returns errors and I've forgotten how to figure it out.
This is a real Grrr for me. lsusb reports the card's name and address fine, dmesg reports it plugging in and out, the 2.6.30.3 kernel is supposed to include a driver for the 8055...but the only bunch of software I can find won't compile and I can't figure out why.
At least I went through a day, adding and fiddling, making sure the prereq packages were there, and so I got a little further up the error tree...but still no complete compile.


(this card will make it easy to do datalogging from, for example, a coil with a magnet pendulizing above it, and lots of other stuff too "trivial" to break out the HPIB instruments or the LabView DAQ system...)

[0c]

Hey 0c, maybe you are the one to ask about a little problem I'm having.

It'll have to wait til I get to one of my Linux boxes tomorrow. I'm afraid all I have is SuSE and RedHat enterprise systems at the moment, so even if I manage to build it, there might be some differences with Ubuntu. And I don't have the board, so I wouldn't be able to test or validate the library afterwards.

I downloaded the 8055 source and looked at the Makefile. It looks like a pretty simple build. I haven't looked at the dependencies yet though.

I could probably help more if I could see the actual error messages you are getting. Here's a good opportunity to use that email address of mine.

OC

[0c]

Hey 0c, maybe you are the one to ask about a little problem I'm having.

TK, No problem here on SuSE SLES 10 with the standard development environment. Maybe you have a stripped down set of libraries or something? Built with no errors right out of the box.

All I did was extract sources from libusb-1.0.2.tar.bz2
  cd libusb-1.0.2
  ./configure
  make
  make install

Extracted sources from libk8055.0.4.tar.gz
  cd src
  make
  make install

If you could send me some error messages, maybe I could give you an idea what's wrong.

[TinselKoala]

TK, No problem here on SuSE SLES 10 with the standard development environment. Maybe you have a stripped down set of libraries or something? Built with no errors right out of the box.

All I did was extract sources from libusb-1.0.2.tar.bz2
  cd libusb-1.0.2
  ./configure
  make
  make install

Extracted sources from libk8055.0.4.tar.gz
  cd src
  make
  make install

If you could send me some error messages, maybe I could give you an idea what's wrong.

Darn. I was afraid of that. Thanks, btw, I appreciate your looking at the code.
I'll trap the error output and make a file that I will post to you, later tonight. I think the libusb went in all right.