Electronics Forum / Electronics / June 2004

Put 4 energizer batteries into a Renewal or NiCad charger and plug it in.

I would like to how to do this?????
I konw their are RCL curcuit that can do this with a step down transformer
connected in reverse

Does anyone know of any supplier of cheap external passive infra red
detectors preferably battery operated
i have done various searches & not a lot of luck. I need about 10 to 20 of
them

   My sister has a Pavilion 6601 PC. She whants to install a CD burner but
it only has a 100W power supply. Is this sufficient? The PC has integrated
graphics and audio the only PCI card installed is a modem. The burner will
be the only drive (except for the HDD and floppy).

Are those extended warranties worth getting?
$99 for 5 years sounds pretty good if its a home service and as good as the
original Panasonic 12 months warranty.
I guess it depends on what they include.

Hi Here is a question for the clever ppl on the group
I have a small power pack to charge a nicade battery pack
its 240 volt and 14.3 v out at 60 ma
now Ii was thinking of buying a cheap inverter from dicks..$49 for a

Does anyone know how I can control a stepper motor through a USB port
(USB only!).
know a chip that control a stepper through USB directly? or a chip
that parallelizes data from a USB port?

G'Day All
Anyone know what the rationale behind the "volt fail" relays found in hot
water heaters (mainly instantaneous) was??
Here I am talking about a manually reset relay that needed to be reset

i am switching audio via a MOS 4053. problem is that in the OFF mode
there is a crackly channel off feedthrough somewhat ugly. is there a
similar chip that handles more headroom? i tried grounding the signal
through various resistors to lower the overall signal INTO the chip

I'm looking at getting a 66cm wide screen TV for my bedroom. I don't
want to spend much more than $500. Are there any other TVs in that price
other than the Dick Smith 'DSE' branded one?
thanks!

    I have a 17" Viewsonic E70f-3 Monitor that is just out of warranty and
which has just started to show signs of giving me some real   problems
in the very near future.
    The fault is hard to describe but here goes......! When viewing the

I have an amp which uses a phenolic PCB which has a hole burnt in it....any
ideas on the best way to repair it? I have no idea where to begin.
Bully

I am looking for a news group  specialized in DSP, somebody could help me?
regards

A few people have told me that in their opinion 76cm is too small for widescreen
if your used to a 68cm 4:3 tv (which is what I'm upgrading from).
So I've been looking at the 86cm Panasonic TX-86PW200A:
http://www.panasonic.com.au/sitelet/produc...86PW200A~CTVWST

Is there an online list of TV transmission sites for Victoria?
I was checking my father in laws aerial at Bungeet and knew about Mt Major
(Dookie near Shepparton) and Mt Baranduda (near Wodonga), but got some other
strong signals also. It starting raining, so I didn't have time to ...