Electronics Forum / Electronics / September 2007

I am currently developing a module which uses this
device. When I configure it to communicate within
a band which is different from the default one (132kHz),
the register access clock signal becomes very instable.

On Sep 23, 2:36 pm, "Brian Gregory [UK]" <n...@bgdsv.co.uk> wrote:

What safety or design codes are required in US consumer products?
To narrow it down lets say home appliances using either wall or battery
power 120vac max with digital/analog circuits but no intentional
radiators. For example: food processors, foot massagers, stereo equip.

I wonder if anyone has one of these soldering irons circa 1960 ->
commonly used by Telecom/Telstra techs on 50V. They usually had a red
bakelite handle and the heater element was spiral wrapped with
stainless wire. The M100 series took a 1/4" diameter soldering tip.

Formula Bank of common electronic calculations and conversions.
Download at:
http://www.skyelectro.com/download/calculators/index.html

**  Hi to all my fans ....
Bet you have ALL  been waiting for this for years !!!!
The Australian Government  "Do Not Call" register is finally set up.
http://www.dcita.gov.au/communications_for_consumers/telephone_services/do_not_call/

It is now effectively impossible, because of all those mobile phones, every
few minutes, informing Big Brother where all his targets are.
By the time you have a dozen or more such devices in one space it becomes
intolerably intrusive by RF/IF? breakthrough, separate from audio banal

Hi we had our wedding dvd made up in 2 versions, as we have relatives in the
USA.
One version is in PAL, and the other is in NTSC.
I have a DVD recorder which makes quick copies.

I went through _Introductory Circuit Analysis_ and Boylestad states
that dc power sources should only be put in series because there the
voltages are additive.  He also states that the only exception for
putting them in parallel would be to to increase power.  After which,

Does anyone have any good suggestions where you can find high quality
electronic kits?
I have purchase from PAIA and Qkits and PAIA definitely has higher quality.
Thanks.

Hi, I'm looking for an adaptor that will connect my Shure lavalier
mike (with mini xlr plug) to a quarter inch jack socket on an m-audio
microtrack.
pictures here: http://www.zen73857.zen.co.uk/mike/

I'm looking for a DTMF encoder ic and a matching DTMF decoder IC.
The ones I have seen use a serial interface bus but I am after discreet
binary output.
I am aware of the Motorola MC145436 but it seems that this chip is going out

I think I may have a bad ground somewhere but when I touch any metal
part of the PC, I get a buzzing hum from the sub woofer.  The 2.1
speaker set doesn't use grounds from AC and to the best of my
knowledge, no ground loop outside the subwoofer.  I checked with my

I am thinking of buiying this graphic display.
http://www.crystalfontz.com/products/12864cp/index.html#CFAX12864CP1WGHTS
It has a 4 analog I/O for the touch screen, and 18 I/O (the specidications
are on the link "Data Sheet")

I would like to build a shocking device similar to the prank 'gum' shocker
or the pens that shock you when clicked.  This is for my class room
experiment so it should be low power like the gags one can buy from gas
stations.  I know how to build a shocker from a set of points ...