On Sat, 02 Apr 2011 10:59:02 +0100, The Natural Philosopher wrote:

Arfa Daily wrote:


"Meat Plow" wrote in message
news
On Fri, 01 Apr 2011 21:46:53 +0100, Arfa Daily wrote:

"Robin" wrote in message
...
Arfa Daily wrote:
Anybody got a copy of the schematic that's in the back of the user
guide that they can scan for me, please ? I've searched all my
files and drawers high and low, and can't find my book anywhere ...
I thought that the 'net would be awash with copies of the
schematic, but it seems only for the Mk 2, which is totally
different to the MK 4. TIA

Is it the circuit diagram at
http://www.radiomuseum.org/r/avo_uni...er_8_mk_i.html ?
(Registration necessary for download. I have not done it as mine's
a Mk II.)
--
Robin
PM may be sent to rbw0{at}hotmail{dot}com


Hi Robin, thanks for that. It would appear to be the correct one.
Looks as though you need to pay to become a member, so I will hold
off for now until all the feelers that I have out, run dry. It's
really annoying because I have owned the meter from new when I was an
apprentice, and I have the book, which has the schematic in it,
carefully filed away somewhere, but I'm buggered if I can now find
it. It is in a box file, but said boxfile is not where I know it
should be. Even more annoying is that I have damaged the meter by my
own stupidity, so now have the need to fix it ... :-(

Arfa

That's too bad. I have some old gear I used as an apprentice that have
a high value in the nostalgia department. An old EICO 232 VTVM, B&K
1801 freq. counter, Beckman Tech 310 DVM, Amprobe Amp Clamp and some
other things that I can't think of right now.




Yes, Meat. It's very frustrating. I cut my 'professional' teeth with
that meter, and it has served me faithfully over the years without
serious mishap. It is still in weekly use, but not quite the daily use
that it once was. For some types of repair, the swinging needle of a
quality instrument like this, is so much more appropriate than a
digital type ...


Its a well known fact that the human eye can gain a rough ideas of
what's going on much faster with an analogue display, as it takes longer
to read a digital display, although in the end that is more accurate.

I have never felt the need for a DVM or DAM..99.99% of voltage and
current readings are of the 'is it within 20% of where it should be'
flavour.

The fact is an LCD meter is CHEAPER than a quality moving needle
display.

Not better.

But probably more shockproof.

--
Use the BIG mirror service in the UK:
http://www.mirrorservice.org

*lightning protection* - a w_tom conductor