Electronics Forum / Electronics / May 2007

    I have a GE speakerphone/answering machine made by ATLINKS USA,
model 29897GE2-A.  Now that I have a DSL filter, surge suppressor, and
a FAX/modem board between the phone and the wall, its auto-hangup
feature prevents it from ever taking a message:  it concludes someone

My name is Tony Chiu. My company Xiamen Hongfa Sales Co., Ltd is a
manufacturer and exporter of relay, relay socket, push button switch,
rocker switches. We've gained great sucess in China and planning to
expend our business worldwidely. Anyone can give me some ideas as how

The usual explanation of a feedback oscillator goes like this. ""We have an
Amplifier 'A(w)', a feedback circuit 'B(w)'. An initial input v=Ke(jwt)
produses an output A(w)*B(w)*Ke(jwt) which in turn produces an output
(AB)^2 * Ke(jwt) ...... => If the signal is to be sustained ...

I'm working on a design for a remote power control application
involving a wireless embedded computer tied to a relay.  The device
will be mounted inside of a NEMA-rated outdoor enclosure and AC main
power will be available within the box.  What is the best way to

for a small elektronic projekt I need to convert 5Vdc to 22-24Vdc at 100mA
max.
It has to be done on PCB and the area needs to be as small as possible.
Are there any special IC's available for this?

Anyway, I am just off to the La Rochelle market with organic potatoes
at 1 € pr kg, beautiful lettuces at 1.5 € for two (  all of what I
buying is organic of course ), 5 kg of nice apples for 6 €,  and also
strawberries, cabbages, new onions, peas, persil galore at very

BACKGROUND
On 18 mai, 07:24, War Office <911falsef...@gmail.com> wrote:
http://video.google.com/videoplay?docid=-3384033683607569418
DC911Truth.org presents "From 9/11 Truth To 9/11 Justice: A Symposium

I found this site: Artists Against 419 on Google and as a victim of
the 419 Nigerian Scam I asked for the help of these people. They asked
me to send them 4000 USD by Western Union on the name of Gonez Lapuah,
as payment for their services. I did and never heard of them before. I

I'm looking for a few of these voltage regs in the 12 or possibly 9v if 12v
isn't availble. I don't do too many eletronics projects and the schematics
that i've been looking at are from the USA so i'm not sure how easy/hard
these are to find in australia. I'm not really sure ...

I live in a marginal reception area in South Australia. The Aerial was
originally professionally installed and positioned to face the
strongest signal direction.
I've just bought a Plasma TV with built in HD digital and analog

Greetings again.  I am cleaning up my shop for a move, and in packing up
some speakers I came across some interesting ones.  These are your normal
cone speakers, albeit smaller, ranging from about 1-1/4'' to 2'' in
diameter.  Quite interesting little buggers these are, miniature ...

THIS REALLY CAN MAKE YOU EASY MONEY! IT WORKS!
BUT YOU HAVE TO FOLLOW IT CAREFULLY FOR IT TO WORK!
A little while back, I was looking on the web for easy ways to make
money and I kept thinking that all of the ways I was reading would

Does any one use the Rigol Digital Scopes sold by Emona.
What is their performance like.
http://www.emona.com.au/Bargains/Bargains0001.htm
Comments most welcome.

Hi there, I am selling a newly calibrated B&K 2635 on Ebay UK, auction
number 300111686283.
regards Alan
B&K 2635 For Sale UK

I'm trying to get a really old laptop (Mac Powerbook 170) running again but
its main battery seems to have died. I could open up the old battery pack
and replace the cells but I was wondering if there was a simpler solution.
Does anyone know whether attaching a capacitor between ...