Design

diodes are such rotten diodes
I have a signal that can potentially swing +-15 volts maybe, and I'm going into a 4-pole Sallen-Key filter, then an ADC with swing range 0 to 4.096. So I added a dual diode, BAV99, at the input of the first opamp, connecting to clamp rails of 0 and 4.1. The filter input resistors add up to about 10K. This wo... 15 Jun 2010 19:52

IC Package Drawing Database?
I've been searching the net for a comprehensive list of drawings of IC packages, specifically, all things "SO" (ie, SO, SOP, TSOP, SSOP, TVSOP, etc.). What does come up are lists of packages, but no drawings. I need to have dimensions listed as well, similar to what is typically provided in datasheets. Th... 25 Jun 2010 19:46

New Energy Source?
See... http://steveaustinlex.wordpress.com/2010/06/07/bloomberg-businessweek-clean-energy-bs/ at the bottom of the page, "Cow Manure" ;-) ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. ... 15 Jun 2010 01:07

RF cable connection to board
Hi How do you calculate loss due to a soldered coax cable direct to the board? I have an RG316 cable with SMA connector on one end. But I'm trying to decide if it is best to terminate both ends with RF connectors and then plug this assembly into the board, or just to solder the wire to the board (seems to b... 9 Jun 2010 13:06

A multi processor PIC computer :-)
A multi processor PIC computer :-) ftp://panteltje.com/pub/multi_processor_PIC_LED_color_controller_hardware_img_2002.jpg I modified my LED color controller a bit so it has 3 independent hardware PWM channels. One PIC is the master, is controlled via ethernet, and its PWM unit drives blue. It forwards the other ... 11 Jun 2010 21:28

re Goodbye to an era
On Wed, 09 Jun 2010 09:20:33 -0400, JW <none(a)dev.null> wrote: This implies that they were unavailable. 0. Nada. Zilch. Since they *were* available in the 70s, you were (Always)Wrong. Still waiting for that list of consumer products that had LCDs in them that were out back in the 70s. Hell, list even... 9 Jun 2010 19:49

Input rectifier cap
If I calculated a 120Hz, 1.3Arms ripple current for an input rectifier cap for a flyback, how could I calculate the core temp based on a given maximum ambient temperature (50C)? I'm interested in using one Panasonic 270uf 105C cap rated at 1.42 Arms @120Hz. http://search.digikey.com/scripts/DkSearch/dksus.dll... 16 Jun 2010 19:56

ARM-based desktop computer ? (Hybrid computers ?: Low + High performance ;))
Andrew Reilly <areilly---(a)bigpond.net.au> writes: Back in '87 or so I had an Acorn RISC "PC", which had an ARM-2, and a "PC emulator". That must have been the Archimedes A310. The RISC PC did not come out until some time in the 90's, and this used an ARM610. It simulated an 8088 and the PC's basic ... 10 Jun 2010 22:22

Archie
Archimedes' Lever 72.197.137.141 Oceanside, California wrote AL > You punk [f...] mentality retards take the cake in this group. G > If it's such a BAD group, then why are you here? G > What group would you pretend you fit into? G > Is there a coprolalia group somewhere that welcomes you? G > G > How are you an... 9 Jun 2010 22:01

Would like to decode and display V22bis data (2400baud)
On Tue, 08 Jun 2010 17:09:13 +0100, David Chapman wrote: Hi, I have some high-quality DAT recordings of a V22bis (2400 baud) data exchange between a modem and a computer, which were made by recording across the telephone line via a suitable interface. I'd like to be able to decode, display ... 14 Jun 2010 07:20