Hi all,

I've got quite a huge stash of inductors in my parts bin. The colour
codes don't always seem to relate to the values I've been able to
measure, with my multi-function DVM, however, and I can't accurately
measure any inductor about 10uH. Is there a circuit anywhere that
would enable me to get a reasonably accurate idea of the values I've
got down to say 100nH or thereabouts?

Thanks,

p.
--

The BBC: Licensed at public expense to spread lies.

"Paul Burridge" wrote in message
...
Hi all,

I've got quite a huge stash of inductors in my parts bin. The colour
codes don't always seem to relate to the values I've been able to
measure, with my multi-function DVM, however, and I can't accurately
measure any inductor about 10uH. Is there a circuit anywhere that
would enable me to get a reasonably accurate idea of the values I've
got down to say 100nH or thereabouts?

www.google.com

"Paul Burridge" wrote in message
...
Hi all,

I've got quite a huge stash of inductors in my parts bin. The colour
codes don't always seem to relate to the values I've been able to
measure, with my multi-function DVM, however, and I can't accurately
measure any inductor about 10uH. Is there a circuit anywhere that
would enable me to get a reasonably accurate idea of the values I've
got down to say 100nH or thereabouts?

If you have a signal generator you can connect them to a suitable capacitor
and measure the resonant frequency.

Leon

On Mon, 15 Mar 2004 12:48:43 -0000, Leon Heller wrote:

"Paul Burridge" wrote in message
...
Hi all,

I've got quite a huge stash of inductors in my parts bin. The colour
codes don't always seem to relate to the values I've been able to
measure, with my multi-function DVM, however, and I can't accurately
measure any inductor about 10uH. Is there a circuit anywhere that
would enable me to get a reasonably accurate idea of the values I've
got down to say 100nH or thereabouts?

If you have a signal generator you can connect them to a suitable capacitor
and measure the resonant frequency.

Leon

Nyuk, nyuk, nyuk. I bet if he had a signal generator, he wouldn't be
looking for inductors to shotgun that multiplier In fact, he
wouln't even be building a multiplier.
--
Best Regards,
Mike

On Mon, 15 Mar 2004 12:48:43 -0000, "Leon Heller"
wrote:


"Paul Burridge" wrote in message
.. .
Hi all,

I've got quite a huge stash of inductors in my parts bin. The colour
codes don't always seem to relate to the values I've been able to
measure, with my multi-function DVM, however, and I can't accurately
measure any inductor about 10uH. Is there a circuit anywhere that
would enable me to get a reasonably accurate idea of the values I've
got down to say 100nH or thereabouts?

If you have a signal generator you can connect them to a suitable capacitor
and measure the resonant frequency.

Hi Leon,

That's what I have been doing, in fact. It's just I'd prefer to have a
more convenient, portable method to get instant read-outs of coil
values...
--

The BBC: Licensed at public expense to spread lies.

On Mon, 15 Mar 2004 15:12:24 +0000, Paul Burridge wrote:

On Mon, 15 Mar 2004 12:48:43 -0000, "Leon Heller"
wrote:


"Paul Burridge" wrote in message
. ..
Hi all,

I've got quite a huge stash of inductors in my parts bin. The colour
codes don't always seem to relate to the values I've been able to
measure, with my multi-function DVM, however, and I can't accurately
measure any inductor about 10uH. Is there a circuit anywhere that
would enable me to get a reasonably accurate idea of the values I've
got down to say 100nH or thereabouts?

If you have a signal generator you can connect them to a suitable capacitor
and measure the resonant frequency.

Hi Leon,

That's what I have been doing, in fact. It's just I'd prefer to have a
more convenient, portable method to get instant read-outs of coil
values...

So why beat yourself to death building a sweep gen to test filters
when you got that there sig gen?
--
Best Regards,
Mike

On Mon, 15 Mar 2004 19:01:01 -0500, Active8
wrote:

So why beat yourself to death building a sweep gen to test filters
when you got that there sig gen?

Because it has to be small and light enough to be mounted on our robot
for field checks. Try doing that with a 120lb Marconi. :-)

--

The BBC: Licensed at public expense to spread lies.

On Tue, 16 Mar 2004 13:02:44 +0000, Paul Burridge wrote:

On Mon, 15 Mar 2004 19:01:01 -0500, Active8
wrote:

So why beat yourself to death building a sweep gen to test filters
when you got that there sig gen?

Because it has to be small and light enough to be mounted on our robot
for field checks. Try doing that with a 120lb Marconi. :-)

That's more macaroni than even *this* eyetalian can eat.

You're confusing me again. If you have a filter on a bot in the
field, it's the same filter that was on the bot before you got there
and should do the same thing.

If you change a filter in the field, you'd want to sweep it before
it's installed in der bot.

--
Best Regards,
Mike

On Tue, 16 Mar 2004 13:02:44 +0000, Paul Burridge wrote:

On Mon, 15 Mar 2004 19:01:01 -0500, Active8
wrote:

So why beat yourself to death building a sweep gen to test filters
when you got that there sig gen?

Because it has to be small and light enough to be mounted on our robot
for field checks. Try doing that with a 120lb Marconi. :-)

That's more macaroni than even *this* eyetalian can eat.

You're confusing me again. If you have a filter on a bot in the
field, it's the same filter that was on the bot before you got there
and should do the same thing.

If you change a filter in the field, you'd want to sweep it before
it's installed in der bot.

--
Best Regards,
Mike

On Mon, 15 Mar 2004 19:01:01 -0500, Active8
wrote:

So why beat yourself to death building a sweep gen to test filters
when you got that there sig gen?

Because it has to be small and light enough to be mounted on our robot
for field checks. Try doing that with a 120lb Marconi. :-)

--

The BBC: Licensed at public expense to spread lies.