Design

Antenna for cordless phone
Hi, Sometimes (rarely), on my "evening sabbatical", I carry a cordless phone (NOT a cell phone) with me. This has sufficient range to cover almost the entire "development" (e.g., I can get about half a mile, as the crow flies). *But*, there is one section (0.52 miles? :> ) where I lose reception. I've to... 26 May 2010 04:49

LDO specs
I'm not understanding a line in a datasheet. ST Micro LD291500 This monkey here http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=497-3468-2-ND Datasheet: http://www.st.com/stonline/books/pdf/docs/9614.pdf I want a linear post regulator for a 6V output switcher to get me a 5V supply at 1A... 19 May 2010 20:30

LVPECL to PECL to LVPECL
The supply variety on ECL parts in general has ever been diminishing over the years, the variety is not even continuous. I should now connect an FPGA to a bunch of ECLs. The LVDS to LVPECL translation can be done with a 65LVDS100. Further I can only find a few ECL parts and finally I should connect to LVPECL agai... 19 May 2010 00:42

Call for papers : HPCS-10, USA, July 2010
It would be highly appreciated if you could share this announcement with your colleagues, students and individuals whose research are in parallel computing, distributed systems, operating systems, computer architecture, grid-computing, VLSI, and related areas. Call for papers : HPCS-10, USA, July 2010 The 201... 16 May 2010 09:10

LTC Buck Regulator Spice Question
Is there an LTC buck regulator, up to 40V input, 100mA output, adjustable, where there is a NON-encrypted Spice model? ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et ... 16 May 2010 07:01

zigbee???
We have a requirement for remote (on/off) I/O that seems like a good fit for a Zigbee-ish system. What I've found is not what I expected - there seem to be a number of IC/module-level devices (of variious levels of integration), but no off-the-shelf board/box-type products. (eg - an '8-bit Zigbee input board'.) ... 22 May 2010 22:32

PCB trace spacing with soldermask
A certain trace spacing guideline is indicating a minimum requirement of .005" spacing for voltages up to 100VDC for soldermasked traces. Is that correct? Any caveats? ... 18 May 2010 21:26

PSU help understanding this circuit
Posting again as it appears not to have got through with a jpg attachment... I need some help with this . I understand how some of it works, but not all. Q1e is clamped by the 2v5 Vref.This provides a constant current for the 12V zener of ~ 2.5/780 = 3mA. The zener clamps Q2b @ 12v and thus Q2e @ 11.4 nom.This supp... 15 May 2010 13:43

Bode Plot help
How do I attach a PDF (Bode plot) to this message so I can ask questions. I am using Google groups and they do not have alt.binares.electronic.design. I know I am asking to be totally harassed and Joerg will tell me how much smarter he is but I would like some help. Cheers, Harry ... 18 May 2010 11:28

Which type of volatile RAM has the least duration of data remanencewhen power-offed?
On 5/14/2010 3:12 PM, GreenXenon wrote: On May 14, 4:37 am, bok...(a)zonnet.nl (Gerard Bok) wrote: On Wed, 12 May 2010 20:07:30 -0700 (PDT), GreenXenon <glucege...(a)gmail.com> wrote: Which type of volatile RAM has the least duration of data remanence when the power is offed? SN7489 ... 16 May 2010 22:21