Design

dsPIC33f and SPI,SSEN too short
Hi to everybody Please can i have your help? I would like to control an AD5328 DAC by a dsPIC33F.The AD5328 wants a SSEN kept low during the entire transmission,but the dsPIC33F in framend mode just send a pulse at the beginning of transmission. I could drive that pin as a normal I/O ,but it looks that interru... 28 Mar 2010 02:32

900MHz beat freq. transmitter
Can anyone advise what type of equipment would be needed to create a _localized_ beat frequency (standing wave) on the order of a few KHz by engineering the phase relationship between two 900MHz PWM carriers? What degree of oscillator stability is implied? Mark Langley ... 27 Mar 2010 18:50

DANGER DANGER THIRD DAY CPU FAN FAILURE DANGER DANGER. (AMD SimNow 4.5.2 has no CPU FAN emulator :( )
I have tried and done the following things: 1. Downloaded the bios rom from bios chip to floppy disk. (Special AFUDOS bootdisk needed) (It's kinda strange afudos didn't want to run with ms-dos 6.22 bootdisk, so it needs it's own special dos ?) (Fortunately I already had all the necessary disks from the past ex... 27 Mar 2010 02:16

DANGER DANGER - Archimedes' Lever goes nuts
On Fri, 26 Mar 2010 18:07:31 GMT, Styx(a)Theriversend.com (WHY???) wrote: Heres what happens on the street where lever lives. Snipped retarded bullshit baby's retarded baby bullshit link. More retarded baby bullshit from yet another retarded bullshit baby. Grow up, asswipe. You give Styx a bad name... 30 Mar 2010 08:19

reg + reference
ftp://jjlarkin.lmi.net/V220_reg.JPG John ... 4 Apr 2010 18:12

PCI express
Hello Say you're designing a 4-lane PCIe add-in card. If you plug this into a 16-lane slot in a PC, do the 4 used lanes have to be lanes 0 to 3 (if the PC's PCIe lanes are numbered 0-16)? Or could you use lanes 8-11? Or any other 4 adjacent lanes? ... 26 Mar 2010 13:11

Guitar one octave Up
I want to make a circuit that takes a guitar input signal, and then outputs a signal with fundamental and 2nd order harmonic with the same level (or arbitrary levels, I want to amplify the two components at will). I figured that there are various ways to do this, but I'm trying to do it all analog if possible (s... 3 Apr 2010 19:14

accuracy of BCV62
On page 4 of this datasheet http://www.nxp.com/documents/data_sheet/BCV62.pdf the manufacuterer gives 0.7 to 1.3 for Ic1/Ic2. Other manufacturers' datasheets use the same number. How many sigmas away from the mean the 30% accuracy statistic is makes a huge difference in the attractiveness of this current mirror a... 6 Apr 2010 13:02

NXP LPCXpresso demo board
A colleague recommended I get an LPCXpresso demo board, which contains a JTAG interface connected to a small target system, but usable separately by physically snapping the target system off the end. ARMs, I discover, have a facility called 'semihosting', where the target system can write to the host system's ... 26 Mar 2010 14:21

Is it just me or is the pricing at Digikey getting ridiculous?
I haven't placed an order there for a while but I need some HS drill bits and they are the only place that has them so I thought I'd look around and man I don't know how they stay in business!!! What is their mark-up? It's pretty bad when the mom and pop place where I get my ferric chloride beats Digikey in pric... 29 Mar 2010 15:52