Anyone know what battery this VTVM takes for resistance. It looks like
C size but a C won't quite fit.
tnx

--

73
Hank WD5JFR

"Henry Kolesnik" wrote in message
et...
Anyone know what battery this VTVM takes for resistance. It looks like C
size but a C won't quite fit.
tnx

--

73
Hank WD5JFR
According to manual at Bama site,
ftp://bama.sbc.edu/downloads/triplett/850/850.pdf

it's an Eveready #935 or Burgess #1 (see pg. 4).

Regards,
John

Those cross as a standard C cell.


"John Sheatsley" wrote in message
nk.net...

"Henry Kolesnik" wrote in message
et...
Anyone know what battery this VTVM takes for resistance. It looks like C
size but a C won't quite fit.
tnx

--

73
Hank WD5JFR
According to manual at Bama site,
ftp://bama.sbc.edu/downloads/triplett/850/850.pdf

it's an Eveready #935 or Burgess #1 (see pg. 4).

Regards,
John

"Henry Kolesnik" asked:

Anyone know what battery this VTVM takes for resistance.
It looks like C size but a C won't quite fit.

"John Sheatsley" reckoned:

According to manual at Bama site,
ftp://bama.sbc.edu/downloads/triplett/850/850.pdf

it's an Eveready #935 or Burgess #1 (see pg. 4).

and "Bill Morris" added:

Those cross as a standard C cell.

Which is almost certainly correct. The problem is that the
sizes of the various cells have changed over time, as the
"thin layer of cardboard over zinc cell casing" has been
replaced by "thick cardboard jacket over painted tinplate
casing" of the modern "leakproof" cell. I have this problem
with an SEI photometer - you are supposed to strip the card
jacket off the U2 (D cell) before fitting it, as the cell
compartment is insulated with a thin paxolin liner. If you
remove the liner, /some/ modern 'D' cells will fit, but
certainly not all brands of them.

Try zinc-carbon (not alkaline), and either military surplus
(which may still be the non leakproof style), or the very
cheapest cells you can find. Failing that, you'll need to make
up a dummy cell that takes something smaller (AA is probably
too tall, maybe an 'N' or 1/2 AA).

Good luck! (I have this problem with discontinued radio batteries.)
Chris.


--
"No man can have a higher moral duty than to
stand for parliament against David Mellor"
Dominic Lawson

I guess the cells have grown over the years, all mine measure just under
2 inches in length. I wasn't able to force a C in but I did get an AA
in and it works fine. And now I have a manual thanks to Anon at Bama.
tnx

--

73
Hank WD5JFR
"Chris Suslowicz" wrote in message
...
"Henry Kolesnik" asked:

Anyone know what battery this VTVM takes for resistance.
It looks like C size but a C won't quite fit.

"John Sheatsley" reckoned:

According to manual at Bama site,
ftp://bama.sbc.edu/downloads/triplett/850/850.pdf

it's an Eveready #935 or Burgess #1 (see pg. 4).

and "Bill Morris" added:

Those cross as a standard C cell.

Which is almost certainly correct. The problem is that the
sizes of the various cells have changed over time, as the
"thin layer of cardboard over zinc cell casing" has been
replaced by "thick cardboard jacket over painted tinplate
casing" of the modern "leakproof" cell. I have this problem
with an SEI photometer - you are supposed to strip the card
jacket off the U2 (D cell) before fitting it, as the cell
compartment is insulated with a thin paxolin liner. If you
remove the liner, /some/ modern 'D' cells will fit, but
certainly not all brands of them.

Try zinc-carbon (not alkaline), and either military surplus
(which may still be the non leakproof style), or the very
cheapest cells you can find. Failing that, you'll need to make
up a dummy cell that takes something smaller (AA is probably
too tall, maybe an 'N' or 1/2 AA).

Good luck! (I have this problem with discontinued radio batteries.)
Chris.


--
"No man can have a higher moral duty than to
stand for parliament against David Mellor"
Dominic Lawson

Check these specs out. Looks like a modern AA will way outperform an old
935 carbon zinc C cell hands down. Just wrap your AA alkaline in paper or
cardboard, wrap in electrical tape or spend the money for heat shrink and go
for it.

References:
old C cell (1800mah) http://data.energizer.com/PDFs/935.pdf
New AA cell Page 9 (2850 mah)
http://www.duracell.com/oem/Pdf/others/ATB-full.pdf

Good luck.

PP
.........I wasn't able to force a C in but I did get an AA
in and it works fine. And now I have a manual thanks to Anon at
Bama..............

According to manual at Bama site,
ftp://bama.sbc.edu/downloads/triplett/850/850.pdf

it's an Eveready #935 or Burgess #1 (see pg. 4)..........

PP
Thats good to know, thanks for the post, I suspected that but wasn't
sure. The AA aint going nowhere, its so tight and a bit of paper
cushion insures that.
Hank
"Paul P" wrote in message
news:GiOBh.620$h8.37@trnddc05...
Check these specs out. Looks like a modern AA will way outperform an
old 935 carbon zinc C cell hands down. Just wrap your AA alkaline in
paper or cardboard, wrap in electrical tape or spend the money for
heat shrink and go for it.

References:
old C cell (1800mah) http://data.energizer.com/PDFs/935.pdf
New AA cell Page 9 (2850 mah)
http://www.duracell.com/oem/Pdf/others/ATB-full.pdf

Good luck.

PP
........I wasn't able to force a C in but I did get an AA
in and it works fine. And now I have a manual thanks to Anon at
Bama..............

According to manual at Bama site,
ftp://bama.sbc.edu/downloads/triplett/850/850.pdf

it's an Eveready #935 or Burgess #1 (see pg. 4)..........

"Henry Kolesnik" asked:

Anyone know what battery this VTVM takes for resistance.
It looks like C size but a C won't quite fit.


I use an AA cell in my Triplett 850.
The AA cell is only held by the contact pressure,
but no problems with the cell getting loose.

73,
Ed Knobloch

On Feb 17, 11:47 pm, "Henry Kolesnik"
wrote:
PP
Thats good to know, thanks for the post, I suspected that but wasn't
sure. The AA aint going nowhere, its so tight and a bit of paper

Hint: Within last couple of years in a dollar store saw some adapters
that would allow you to fit an AA into the same space as a a C, a C
into a D space etc. Set of three for a few bucks IIRC.
Don't know whether these would do the job being discussed here? But I
should have bought them!

"terry" ) writes:
On Feb 17, 11:47 pm, "Henry Kolesnik"
wrote:
PP
Thats good to know, thanks for the post, I suspected that but wasn't
sure. The AA aint going nowhere, its so tight and a bit of paper

Hint: Within last couple of years in a dollar store saw some adapters
that would allow you to fit an AA into the same space as a a C, a C
into a D space etc. Set of three for a few bucks IIRC.
Don't know whether these would do the job being discussed here? But I
should have bought them!

I've seen charger kits that come with those, presumably they are
getting enough power into a the AA NIMHs that they only reason they
can't be used in things that require "C" and "D" cells is their size.

MIchael VE2BVW