Electronics Forum / Electronics / April 2009

Does anyone have any experience on how long it takes to re-coup your money
on one of these systems ?
The sales pitch looks fabulous but after getting the calculator out it
doesn't seem so good.

I would like to make a DIY 75 to 75 ohm Isolation transformer to
eliminate ground loop hum from incoming digital cable TV feed.
I have found some DC blocking Baluns that one could connect together
to make a 75-300-75 set-up but from my reading I think this might be

Does anybody know the difference between an optocoupler and a Solid
State Relay?
Thank you very much!
Kind Regards,

' Engology ' - Engineering Technology.
See: http://www.Engology.com
http://www.EIAss.com - Engineering Industrial Relations.
Regards,

I'm interested in the analog signal this connector will accept. I am
wondering if a TV with this connection type will accept an analog RGB signal
from some older equipment, namely arcade video signals, which run at 15Hz.
Does anyone have any idea?

got hold of a mystery gadget; a professional lookign circuit board
installed into a  VCR tape box, with a video in rg connector, a video
out rg connector, and an 18 volt AC power jack. google comes up a
blank. anybody got any idea what this baby might be, while i go look

Pioneer PDP-V401 40-inch plasma will run OK for hours or minutes and then
turn itself off. The warmer it is the shorter the period. Only cycling the
power switch will restore function. (It doesn't power on automatically after
cooling.)

LG and Fisher & Paykel service manuals are available here:
http://www.jordansmanuals.com/
http://www.jordansmanuals.com/Default.aspx?Brand=LG
http://www.jordansmanuals.com/Default.aspx?Brand=FP

I have a 12v cordless drill, when I first got it, it worked fine.  I
would get about 1.5hrs out of it.
It does not get used as much as my original one, but it is flat out now
getting past 30mins without me having to change out batteries.

Acer Extensa 2350 xp home
Before I go any further, I am aware that the sound card
for the Acer is on the mainboard, not stand alone.
I cant get a microphone to work thru the 3.5" phone jack.

For those interested in such things:
------------------------------------------
23. Electric vehicles: Cars of the future?
EnergyAustralia invites you to this free public forum and Open Day, hosted

For those who just cant get enough of my dulcet tones and engaging character
(:->)
my EEVblog is now available as a video Podcast, including through iTunes.
So you can have the latest episode automatically feed into your iPod or

I am trying to find suitable flow sensor for coffee bean dispenser for
my hobby project.I tried google it but could not find any projects or
solid flow sensor for sale.
thanks.

How did you spend your stimulus handout?
Even if you haven’t spent your cash yet, or you are still waiting to
receive it, let us know what you intend to spend it on. Even if you
paid a bill or saved it.

I've been using one of those cheap digital storage oscilloscopes
(Protek DSO-2090) that plugs into your computer's USB port.  I think
maybe I'm beginning to see one of the downsides of this type of
device.  Either that or my circuit is really messed up--that's what