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PCB drawing
Started by icegray 8 years ago
Hi all,
Which PCB program does Professional use?
PCAD is better than ORCAD and PADS or which one is better??????? I have
got ORCAD experience and I think ORCAD is not comfortable at advance
PCB. What do you think about PCB programs?
...
V Cut for multiple layers PCB
Started by kunil 6 years ago
Hi all,
I need second opinion about V Cut for multiple layers PCB.
I designed a 4-layers PCB, and want to buy 1 or 2 PCB panels from this
PCB manufacturer. The PCB manufacturer offered me a V Cut to separate
each copy of my design. They said it'd be cheaper since I could break
the V Cut wit...50 ohm PCB antenna track impedance
comp.zrch.embedded - 2010-03-24 10:03:00
I am designing a PCB which will use a GPRS modem. The connection
between the Antenna SMA connector and the GSM modem is via a 20mm 50
ohm PCB track. This is a two layer 1.6mm thick 1 oz copper PCB and the
50 ohms impedance is achieved with a 260 thou track in a ground plane
with 8 thou clearance...Mounting/wire a MAPBGA
Started by Edzard H.E.H.M. Kolks 9 years ago
Hello,
I have been given some MC68VZ328VF33V, Dargonballs.
They have MAPBGA housing, so it's impossible to solder them the old
fashion way.
I was wondering: How can you mount them to a PCB?
Is it possible to glue them to the PCB with a special product
that doesn't isolate the electrical &quo...processor based PCB designs
manohar - 2005-09-08 13:41:00
Hi,
I accept that I don't have a previous experience of designing
embedded PCB boards, but I feel this should not be problem for me now.
I want to design embedded PCB boards with ARM processors in it, some
thing like LART and balloon boards projects. Can some one give me the
directions for goin...low cost CRT controller for ARM9
Started by Unknown 8 years ago
Hi,
We are looking around for cheap CRT controller which to add to our new
ARM9 development board.
So far Seiko-Epson S1D13506 and Asiliant 65550 took our attention.
Any experience with the above two?
Is there better options which we missed?
Thanks
Tsvetan
---
PCB prototypes for $26 at ...PCB manufacturer in Europe
Started by - 9 years ago
Hi all,
Till now I was using Eurocircuits in Belgium for the PCB manufacturing. But
I'm not satisfied any more ( upload problems, capacity problems etc. ). Are
there more PCB manufactures which have an easy to use upload mechanism and
good price / quality ratio somewhere in Europe?
...PCB routing
Habib Bouaziz-Viallet - 2010-04-02 06:59:00
Hi all !
I'm being project on a based MPC8315E. I have some experience on High
Speed PCB routing (DDR & DDRII) but never PCI-e or SATA.
I would be very grateful if someone could recommend me a book on the
topic and generally speaking on High Speed PCB guidelines (and theory)
Best re...Intrinsically safe PCB connectors?
ElderUberGeek - 2007-01-07 10:22:00
For a unit that will be encapsulated in resin (for intrinsic safely) I
am looking for a PCB connector that will allow for field wiring of the
relevant wires to the unit (meaning, the bottom half of the connector
that is mounted on the PCB is also encapsulated in the resin but the
upper part used...Simple PCB circuit-tracing technique (1 or 2 sided)
msg - 2006-04-08 11:50:00
Hello all,
Although this is certainly elementary, I thought I'd share it since it
may help someone in a pinch; here is my simple technique to create a
preliminary schematic from a populated 1 or 2 sided pcb:
http://ipx1.cybertheque.net/homebrew/pcb-photog/
Regards,
Michael Grigoni
C...What is your favorite PCB software?
Joel - 2008-04-07 10:19:00
Just curious about what everyone uses. I've been using Orcad PCB editor.
...SELL PCB
Started by Unknown 6 years ago
GENMA Technology Hong Kong Limited Co. is an export-oriented PCB (
Printed Circuit Board ) manufacturer . We can provide the single-side
PCB, the double-sides PCB and the multi-layer PCB
Contact: Mr. LIU CANFA
Company: GENMA Technology Hong Kong Limited Co.
Address: AiLian B District, LongGang ...Looking for online Flex PCB manufacturer
Started by Anton Erasmus 5 years ago
Hi,
This is the first time I am venturing into flex PCB territory. The PCB
houses I normally use do not do flex PCBs. I am looking for
recommendations for companies that can do good quality double
sided flex PCBs at a good price. Since we are doing low quantities,
the NRE costs are very impor...TQFP handling while developing
Started by Paul Rosen 9 years ago
Hi @ll
Microchip offers his new controllers (i.e. dsPIC) with > 40 leads only
in the TQFP but not PLCC package. Sockets for TQFP are not reliable.
Thus they are no solution.
What does that mean? The original PCB cannot longer be used for
developement, because sockets are not possible....Eurocard question...
Ross Marchant - 2006-02-15 21:12:00
On a typical 3U eurocard style module, does the front panel sit flush
against the PCB or out a bit??? I'm trying to work out where to put the
front panel mounting holes.
i.e.
| |
-> | | | | | | ...(Revised) Simple PCB circuit-tracing technique (1 or 2 sided)
msg - 2006-04-08 13:20:00
(reposted due to error in URL embedded in previous post -- can't cancel
through our nntp host)
Hello all,
Although this is certainly elementary, I thought I'd share it since it
may help someone in a pinch; here is my simple technique to create a
preliminary schematic from a populated 1 or...Protection Earth over PCB
Jürgen Veith - 2005-07-18 10:36:00
maybe this question is a bit off topic here, but for a phase control
thyristor design I plan to use the Tyco Mate-N-Lok conntectors for a one hp
3 phase AC motor. These connectors have UL up to 600VAC and plugged only
without load.
I am shure that the PCB design can blow 3x16 Amp fuses but I ...Manufacturing - Tracking
eeboy - 2011-02-17 23:46:00
I work for a small manufacturer. We ship a product with several different
PCB assemblies. We've never had a good system to track exactly what goes
out the door to each customer. I am in the process of rectifying this and
wanted to see what others do. At a minimum I want to relate the PCB
revision an...Flash / IC used in SD Cards.
Started by Jon S. 9 years ago
I'm working on a project that will use a SD Card for file storage.
We would also have some 'internal' filespace. So i thought of placing
a second memory on the PCB and on the same SPI bus. This would save
the work of writing a different driver.
Offcoarse i could add a second SD Card socket ...Looking for a switch
Started by Jim Stewart 7 months ago
Does anyone know of a pushbutton switch
that can be surface mounted to the back
side of a PCB with the actuator button
protruding through a hole in the PCB?
...Program for PCB/Circuit Design
BoysBoysBoys - 2006-10-22 16:45:00
What program do PCB makers use to layout all of the circuits before
printing?
...PCB Express, Advanced Circuits, etc.
Started by Robert Scott 9 years ago
My favorite local circuit board maker has just gone out of business,
so I am looking at the on-line out-of-town companies for boards in
prototype quanties. The two that I know of are PCB Express and
Advanced Circuits. Does anyone have any comments, pro or con, on
these two companies, or any su...What is the Best PCB Layout software ? (Money no object)
Started by Anton Erasmus 9 years ago
Hi,
There have been quite a few discussion regarding cheap PCB/Schematic
layout packages recently. What package(s) are considered the best if
money is no object ? What features does this/these package(s) have
that are not available in the cheaper PCB/Schematic packages ?
What packages are u...PADS to Orcad PCB Editor
Joel - 2008-04-02 11:34:00
I'm making a circuit that uses part of an older design. I'd like to be
able to keep the layout exactly the way it was on the old board.
I have a PADS 2005 ASCII file of the old board and Orcad Capture files of
both the old circuit and my new design. I'd like to import it to PCB
editor. How sho...USB 2.0 High speed 480Mbit device controller
Started by Unknown 7 years ago
Hi,
It seems I can't find anything else than CY7C68013? With the plenty of
USB 2.0 High speed devices around novadays (like cameras, audio, even
flash disks) I do wonder what peoples do use? Google and Digikey don't
show anything but Cypress.
Best regards
Tsvetan
---
PCB prototypes for $...Source for tock PCB shielding covers
Started by Jim Stewart 6 years ago
I'm looking for a small copper or tin
"box" that fits over an area of a PCB
to shield that area.
I know there are plenty of shops that
will do a custom, but the shape is non
critical and I can lay my board out
around a standard part if they exist.
...High speed PCB design tools
Theo Markettos - 2013-03-22 21:54:00
Can anyone give recommendations for PCB programs for high speed digital
design? By high speed I mean up to 10Gbps, though relatively simple boards.
I've done 6Gbps in Eagle and it worked, but there was no way to verify the
performance without fabbing the board and measuring it.
It looks li...Free/Cheap PCB Design Tools?
NoJo - 2007-05-12 16:14:00
I'm starting up a PCB projects with some engineer colleagues -- some
signal sources that we've had cobbled up in the lab for a while. We
don't have any project funding yet, and are currently doing our proof-
of-concept work prior to looking for some funding.
Understandably, we can't use the PC...Plastic Housing for USB Stick
Heiner Karlin - 2006-06-04 17:25:00
Hello,
We need to convert a custom interface to USB. This requires only a small
electronic PCB. The most elegant solution would be to fit the PCB into
one of the common USB stick housings.
We found that Samtec makes USB connectors that can be soldered directly
to PCB boards, as the ones us...brand new PCB with variable resistance between bus lines
Started by Unknown 4 years ago
INCREDIBLE!!
the problem on a new series PCB, the prototype worked well but in the
last version there was some resistance or
short circuit in the bus lines wich hangued the cpu and possibly
destroyed the XCS05 (with strange white or black substance going out
of the gnd or vcc pins).
With a 5...PCB: www.olimex.com
Started by Optimist 9 years ago
Hi guys,
anybody used www.olimex.com to order PCB?
Looks inexpensive at least for prototypes.
Thanks.
--
Dmitriy Fitisov
----------------------
http://www.radier.ca/pic/pictimer.php
...Small volume microvia PCBs
Tim - 2011-10-03 04:31:00
Laser drilled Microvia fab is widely available from volume PCB houses.
But does anyone have a prototype recommendation for a microvia PCB?
...PCB Thermal Analysis
rickman - 2008-01-31 09:18:00
I have a very small board that I would like to model for thermal
analysis. I am pretty confident that I can get by with a first order
analysis since I only want to know if I have a prayer of a chance of
dissipating the heat from this board, rather than a detailed analysis
of the range of temper...Question about PCB software (and making the boards at home)
Started by Gunnar 8 years ago
Hi all,
I stumbled over an ad on www.circuitcellar.com about free PCB software
(http://www.pcb123.com/).
I would like to have some feedback about this software from anyone using it,
possibly comparing it to other PCB software out there.
My needs are simple, I am planning to build small pr...Quick Turn PCB Manufacturing - Viafine PCB Manufacturer
Started by Unknown 7 years ago
Viafine Electronic & Technology Limited (http://www.viafine.com) deals
mainly in the supply of Printed Circuit Boards (PCB,FPC), Single-Sided
PCB,PTH Double-Sided PCB,NPTH Double-Sided PCB,Flexible
PCB(FPC),Multi-layer PCB(2~12 Layers)for worldwide customers. with more
than ten years of spec...Easiest Way To Get Part Library Templates For Pcb?
andersod2 - 2008-08-28 21:18:00
Hey all,
One thing I'd like to know, and like to hear what you have to say
about is how to accomplish a uniform / "easy" way of doing the
following:
(1) Obtaining information about whether a particular part is mass-
produceable
(3) Obtaining the datasheet ( digikey/mouser are goo...Taiwanese PCB Manufacturer: how to find it from UL code
Started by Unknown 5 years ago
Hi folk,
I got a pcb manufactured in Taiwan.
I can read the UL code on it but don't know how to find the name of
the manufacturer.
any help appreciated,
thanks
Enrico
...BARE BOARD PCB TEST QUESTION
Enrico - 2009-10-30 18:20:00
Hi,
I'm routing a PCB.
I'm trying to figure out if I can reduce the number of nails required
by the fixture that my PCB manufacturer will have to build in order to
test the bare boards.
FACTS
----------
The non recurring cost of PCB bare-board test fixtures depends on:
1) The size ...Building Coaxial transmission line on PCB?
Geronimo Stempovski - 2007-02-12 06:10:00
I think transmitting high-speed signals is very easy when you have a
360-degree ground reference, round conductors,
and no other nearby signals like in coaxial cables. My aim is to design PCB
tracks as much like a coaxial cable as
possible. Anyone tried this before? Is it possible with regular...Off the shelf controller chipset or PCB?
Started by R.G. 8 years ago
Hi,
I'm working on a control panel-like device that has a bunch of on/off
buttons (100-200), a control knob (that drives an optical encoder) and
an LCD display. The controller will interface with and control some
software running on a PC via USB or CAT-5 or something similar.
Does anyone k...