Electronics Forum / Electronics / November 2006

I am looking for an IC that will take 12 volts DC input and generate +/- 5
volts DC out at a few milli-amps?
To drive a couple of LCD panel meters.
JERD

For those of you who haven't seen it before, you can download the
data sheet of this old 'device' from
http://members.ozemail.com.au/~bobpar/signetics_25120.pdf
   If you don't know the background story, it's at

I have two of these tubes:
http://www.mespilus.dk/tube.jpg
The information I can read from the tube is:
Tungsram

To deture some one from intering my grarage I change the pin or reset
the combanation all most every day. What will this do to my grarage
door equitment?
Thanks. The problem is when I leave home, not while I'm there. Other

I am looking for a retail shop in Belgium selling the blue Press-n-Peel
product.
Anyone can help with an address ?
Thanks !

looking for a circuit, possibly based on a 555, that will rotate a
turntable/carousel that will display photographs/items - pause for a
few seconds and rotate to the next photo/item. Part of a school Father
& Son project. Would really appreciate any ideas.

I need a 12v dc wall wart rated at 10mv or above that will accept a 1/8"
cable with the +12v applied to the tip. I did a search and can't find 1/8"
listed on any of the items listed. Thanks

I just bought a pr. of amplified speakers,{small} only 30 wattr rms.I
am putting these on my bike which is 12dc. The power supply that comes
with then  is 120vac down to 9vac.I took 1 speaker apart and seen that
their was a  circute to change it to dc.When I put my meter on the + -

Hi chaps, hope someone here can help me either design a unit or build one
for me.
i have mains powered interlinked smoke detectors in my flat and an key fob
operated access control unit on my front door that allows me quick entry in,

Just wandering through Bunnings the other day and came across a pack
of Arlec Remote control power plug switches. It contained a remote 8
ro ten button remote control and 2 (or 4?) plugin switch boxes for
around $35. Did not think more about it until I got home.

Premade, kit or circuit for:
A counter that will count up to 999 days, can be reset at any time (reset button
needs to be able to change out to a key switch), fairly larger display 2.5" (or greater).
Any suggestions??

In Electronics Australia July, 1997 there was an article on an add-on
regulator kit for an el-cheapo battery charger to make it fully automatic.
Jaycar sell the kit.
I've had trouble finding the article and wonder whether anyone has a pdf

We all know how much an 80GB hard drive costs these days, but do you
know how much a 10MB hard drive would have set you back in 1981?
  US$3,398.00!
  You can see a magazine advertisement at

I went in Jaycar today and noticed they didn't have any Silicon Chip
magazines. I just went to the Jaycar website and they list it as out of
stock. Do Jaycar no longer stock SC?
Mike.

Hi I have a Dvd recorder with hard drive.
I also have Foxtel digital.
Anyway to cut a long story short.
I watch my Foxtel on AV2.