Re: HOW-T0 in PHOTOS DC a Meter

[Guest guest]

I use 500 ua.

Jack

HOW-T0 in PHOTOS DC a Meter

I have joined together 3 *1.5v AA bateries and propose to put my moving

coil meter on one side of the battery output. My meter has 3 DCA settings:

500u, 10m, 250m.

I tried the circuit across a piece of dampted cloth and the only setting

to give a readable result was 500u. What would be the safe range using

that setting?

Robin

PS the u after the 500 is a guess on my part, but it looks like a U.

[Guest guest]

the u is actually a strange kind of m for microamps. a thousand of them

makes a milliamp, which the other scales are reading.

i'll defer to others to give the max authoritvely, but my guess is you can

easily use all 500 microamps at 4.5v just fine.

why not add another AA to get 6v? or is it a matter of keeping to a small

package or something?

> HOW-T0 in PHOTOS DC a Meter

>

>

> I have joined together 3 *1.5v AA bateries and propose to put my moving

> coil meter on one side of the battery output. My meter has 3 DCA settings:

>

> 500u, 10m, 250m.

>

> I tried the circuit across a piece of dampted cloth and the only setting

> to give a readable result was 500u. What would be the safe range using

> that setting?

>

> Robin

> PS the u after the 500 is a guess on my part, but it looks like a U.

>

>

>

>

>

> HOW-T0 in PHOTOS menu group webpage. See FILES menu for

> instructions and test results.

>

> This is a discussion, free speech forum, not medical advice. All

> info is free to members. Membership is free, but by joing, you

> agree to hold harmless the posters, including moderator, from

> damages from anything you find here whether jointly, severally,

> or individually. We are interested in your results, but cannot

> say anything about repeatability, or whether this might have

> medical benefits. Thanks, for your understanding, good luck

> researching. --bG

>

[Guest guest]

I assume there's a pot in the circuit to adjust the current?

Jack

HOW-T0 in PHOTOS DC a Meter

>

>

> I have joined together 3 *1.5v AA bateries and propose to put my moving

> coil meter on one side of the battery output. My meter has 3 DCA settings:

>

> 500u, 10m, 250m.

>

> I tried the circuit across a piece of dampted cloth and the only setting

> to give a readable result was 500u. What would be the safe range using

> that setting?

>

> Robin

> PS the u after the 500 is a guess on my part, but it looks like a U.

>

>

>

>

>

> HOW-T0 in PHOTOS menu group webpage. See FILES menu for

> instructions and test results.

>

> This is a discussion, free speech forum, not medical advice. All

> info is free to members. Membership is free, but by joing, you

> agree to hold harmless the posters, including moderator, from

> damages from anything you find here whether jointly, severally,

> or individually. We are interested in your results, but cannot

> say anything about repeatability, or whether this might have

> medical benefits. Thanks, for your understanding, good luck

> researching. --bG

>

[Guest guest]

Hi Jack,

no jsut a couple of forks and spoons.

Take care,

V

> I assume there's a pot in the circuit to adjust the current?

> Jack

>

[Guest guest]

V, I think he means current, not currant.

bG

>

> Hi Jack,

>

> no jsut a couple of forks and spoons.

>

> Take care,

> V

>

>

> > I assume there's a pot in the circuit to adjust the current?

>

> > Jack

> >

>

[Guest guest]

OH :-)

V

> V, I think he means current, not currant.

> bG

>

>> Hi Jack,

>>

>> no jsut a couple of forks and spoons.

>>

>> Take care,

>> V

>>

>>

>> > I assume there's a pot in the circuit to adjust the current?

>>

>> > Jack

>> >

--

[Guest guest]

OK Wise guy! Just because I'm too lazy to spell potentiometer.....geeez.

Jack

Re: HOW-T0 in PHOTOS DC a Meter

Hi Jack,

no jsut a couple of forks and spoons.

Take care,

V

> I assume there's a pot in the circuit to adjust the current?

> Jack

>

[Guest guest]

Oh now there's two wise guys out there. <grin>

Jack

Re: HOW-T0 in PHOTOS DC a Meter

OH :-)

V

> V, I think he means current, not currant.

> bG

>

>> Hi Jack,

>>

>> no jsut a couple of forks and spoons.

>>

>> Take care,

>> V

>>

>>

>> > I assume there's a pot in the circuit to adjust the current?

>>

>> > Jack

>> >

--

[Guest guest]

Thanks all for the helpful replies. Two further questions arise from

your comments:

1. Should I put a pot in the circuit? If so what rating?

2. I decided on 4.5v because it is safer than 6v. Is there any advantage

in increasing the pack to 6V?

Robin

The above comments are in response to Jack Milliorn's email of

14/11/2006 04:45 as quoted below:

> I assume there's a pot in the circuit to adjust the current?

>

> Jack

> RE: HOW-T0 in PHOTOS DC a Meter

>

>

> the u is actually a strange kind of m for microamps. a thousand of them

> makes a milliamp, which the other scales are reading.

> i'll defer to others to give the max authoritvely, but my guess is you can

> easily use all 500 microamps at 4.5v just fine.

> why not add another AA to get 6v? or is it a matter of keeping to a small

> package or something?

>

>