gEDA-user: icarus for-generate support

2007-06-17 Thread Matt Ettus
I have the following code in a module: genvari; generate for (i=0;i32;i=i+1) begin : gen_srl16 SRL16E srl16e(.Q(dataout[i]), .A0(a[0]),.A1(a[1]),.A2(a[2]),.A3(a[3]), .CE(write),.CLK(clk),.D(datain[i]));

Re: gEDA-user: Switching regulator question

2007-06-17 Thread Randall Nortman
On Sat, Jun 16, 2007 at 09:53:39PM -0400, DJ Delorie wrote: 24VAC RMS means 34V peak, HA! 24VAC means 38V peak (i.e. after the bulk caps) on my board. Had to change modules because I designed for 34V. Eeep, that concerns me. What's the Vf drop on your rectifier? I calculated a

Re: gEDA-user: Switching regulator question

2007-06-17 Thread DJ Delorie
HA! 24VAC means 38V peak (i.e. after the bulk caps) on my board. Had to change modules because I designed for 34V. Eeep, that concerns me. What's the Vf drop on your rectifier? Under a volt. KBP201G The first modules were Acon's CX13S2405V's, input 18-36v. Had to switch to

Re: gEDA-user: icarus for-generate support

2007-06-17 Thread Stephen Williams
Your example below is within the skills of Icarus Verilog, but there was a very recent fix for exactly this problem. According to my git logs, it was committed 6/11/2007, which is *after* the very last snapshot. So try the current git. (It should be in the present but stopped CVS as well.) Matt

gEDA-user: Element file format questions

2007-06-17 Thread Randall Nortman
I'm a big fan of drawing my footprints with either a text editor or a python script. It's been a while since I last did this, and I know that pcb keeps changing. Is the documentation at http://pcb.sourceforge.net/pcb-20070208/pcb.html correct for the 20070208 snapshot? (Or is there any

Re: gEDA-user: Fedora 7 CVS install notes

2007-06-17 Thread Craig Niederberger
I found Fedora 7 in general to be a far less hair pulling install than FC6, and I found that to be a massively less hair pulling install than FC5. I run/build a number of apps/projects on FX, and so my installs aren't exactly vanilla. I also typically keep FX-1 on a hard disk in a multi-disk

Re: gEDA-user: Switching regulator question

2007-06-17 Thread Dan McMahill
Bob Paddock wrote: On Saturday 16 June 2007 19:43, Randall Nortman wrote: It seems that the lower the average input voltage, the higher the average efficiency of the regulator is going to be, so I would ideally aim to have the largest input ripple possible, You have to consider things

Re: gEDA-user: Switching regulator question

2007-06-17 Thread Randall Nortman
On Sun, Jun 17, 2007 at 08:53:37PM -0400, Dan McMahill wrote: [...] Personally I avoid aluminum electrolytics like the plague. If you have to use them be sure to look at the ripple current rating and also figure out what temperature the cap will operate at. Aluminum electrolytics have a

Re: gEDA-user: Switching regulator question

2007-06-17 Thread Peter Clifton
On Sun, 2007-06-17 at 21:18 -0400, Randall Nortman wrote: How do aluminum caps fail -- open or closed? Does it buy me anything to have redundancy -- several different capacitors, maybe some aluminum and some tantalum? I will have a low-ESR ceramic or two, but it will be relatively small,

Re: gEDA-user: Switching regulator question

2007-06-17 Thread John Doty
On Jun 17, 2007, at 7:18 PM, Randall Nortman wrote: If anybody happens to have a supplier for an ideal switcher, please forward me the datasheet. I once designed a 96% efficient switching converter for a spacecraft project. It wasn't a matter of magic components: the components were

Re: gEDA-user: Fedora 7 CVS install notes

2007-06-17 Thread Ales Hvezda
[snip] Can you push the new release before 29th please so that fc5 users can still take advantage of it? I will try. It all depends on how well the SCM transition goes between now and then. -Ales ___ geda-user