Assembly is the reverse of disassembly...

I bet you say that to all the girls.

 

That's 'flashing up' not 'fishing up'

 

And how they love it.

 

I'd like one (some day I'll get round to getting one) but I suspect
I'd still use one of the digital MMs.

 

Oh absodiddlyutely, great for checking diodes and trannysistors. I have
a little Philips analogue meter for that porpoise - not that I do much
silicon surgery these days.

Ron T'Otheren

 

Would you like mine? I've not really examined it closely, but TBH I
can't really find a lot of excuse for having it - if I need to see
analogue signals I'll stick the scope on it.

 

Far too fucking big and heavy.

Whereas I think completely the opposite. An analogue meter is good enough
for 99.9% of what you do when used in and around your vehicle and home
environment. especially when all you need to know most of the time is
whether a voltage is present or not and not what the value is down to the
nearest ten thousandth of a volt.

I am not knocking digital mms for resistance measurement they are
unbeatable but a couple of years ago, when faced with a broken one and a
wide choice as to it's replacement, I bought a 15 quid waving needle one
from maplins.

 

Trouble is the digital instrument is cheaper to make and much more
robust. The mechanical movement of the analog meter is always going to
be its weakest point.

Presently Maplin can sell you an analog meter for £11, or a digital for
£9, or nice little clamp meter for £10 that will also to volts and ohms.

http://www.maplin.co.uk/tools/test-equipment/multimeters

 

How about a hybrid design? R/C-type servo but without the gearing?
Would need a precision feedback pot and careful closed-loop control,
mind, to ensure rapid settling at the required reading without
ringing.

Robust and a high-impedance input all in one package..

Battery use might be a bit heavier than a digital instrument, but
that's the only drawback I can see.

 

For quite a while there have been digital meters with a progress-bar
type display alongside the digits.

Even a cheap digital meter is going to be more accurate than any
analogue display. When I jbexed for them Fluke's lowest cost machine had
an accuracy of 0.3% which at the time was about ten times better than an
AVO. Avo accuracy 3% of FSD, Fluke 73 0.3% of reading +1 digit.

 

I've seen a digital meter with both a numerical display and a moving
pointer formed by the lcd display similar to some guitar tuners

Ron T'Otheren

 

Ron said:

With a jpg of a mirror behind it ?

 

of course

 

Oh, sure, but for rapidly changing signals, such as audio, there's
nothing like a waving needle to give a feel for what's going on.

Obviously there are oscilloscopes, but a waggly needle still has its
place for a quick check, I think.

 

"Visually averaging the excursions of the needle".

 

I'm going to have to molish a trolley for my scope and smouldering iron,
I goove.

 

BS4142 ?


--
+-------------------------------------------------------------------+
| Pete Fisher at Home: |
| Aprilia Shiver Yamaha WR250Z/Supermoto "Old Gimmer's Hillclimber" |
| Gilera GFR * 2 Moto Morini 2C/375 |
+-------------------------------------------------------------------+

 

Rumbled ;-)

 

Fluttered?

 

Wow!