Electronics Forum / Electronics / May 2004

Hi.  I may be asking a lot, but I am after one (or more) PC cards that can

1. Capture analog video
2. Receive digital free-to-air signals

I got a card from ebay recently for apple II computer. Although seller
claimed it is a Ethernet card for networking, i have no information
about the card. So I am trying to go by the components to understand
the functionality of the card. But i am stuck with a custom made IC.

Friend of mine bought a Conia 80cm TV a little while ago. It has a
keystone problem and he has lost the reciept, so no warantee. It looks
like a crap TV and was wondering if it's possible to get schematics
and/or service mode info for these TV's.

I need a simple diagram of how to wire a 2.5mm plug into a 2.5mm socket. i
just need to make an extension cord. will be using a wire i got from an hold
earphone.

There is a new site devoted to this clock: www.GC-1000.com

We are looking for large analog meters that can be used with young students
to learn about electricity, voltage and current.
Seems like I remember seeing them with terminals for banana plugs or finger
tightening wires to the meter.

I hooked up a line out on my new desktop PC to the auxiliary in on my
650 watt stereo.  Everything was great for a day or so, then my
computer froze.  Because I didn't know these new computers turn off
when frozen by holding the power button in for a few seconds, I

Hi, i'd like to sense the speed of a motor by pointing a light source to
it and capturing the reflected signal from it. The motor is enclosed but
there are a couple of holes at the bottom of the case to which i could
attach a reflecting film or something like that.

I've been trying to reverse the direction of an AC fan motor without
taking it apart and changing things.
It doesn't have any brushes, it is just a solid core inside an
electromagnet.

I'm thinking of atempting to roll my own power and output trannys for a
guitar amp.  I have an electronics background, but never delved very
deeply into transformer construction.
Does the term "core area" apply to the entire EI frame, or just the part

Hey--
9V is a weird voltage in a lot of projects. We used OpAmps in an
entry-level EE course where we had access to bench power supplies and
could dial in 9V.

If anyone knows of a hobbyist group in the North East of England (Newcastle,
Gateshead, Sunderland, etc) please let me know.  Can't seem to find
anything.
Gary.

I don't have much experience with SMT and am now in a position where I have
to mount a TSSOP packaged device to complete a project.  I'm on a low budget
(student) and have failed so far to locate a hobbyist group in my area that
might show me the way.

Is there such a device that will provide a linear output dependant on the
pressure applied.  This must be small and able to fit into a pressure
sensing mat.  I have searched the net and can only find gas pressure
sensors, I probably don't know what to search for.

I recall seeing a reference somewhere for freeware that draws schematics
using text symbols. Could someone please supply a reference to it? My
queries to Google have, for once, not got me anywhere.
On the same topic, what's a good font for viewing these schematics?  TIA