Hi from Ken,

"William Pence" wrote in message
...
In article Bephh.212$pr5.108@trnddc01, "west"
wrote:

I have a 40 amp, 13.8v supply and would like to add a voltage (0-15v)
meter
and an amp (0-50amp) meter. Cordially,
west

yep. the amp meter will definitely need a shunt. that value is dependent
on the actual coil current for full scale.

the voltmeter can just wire directly across the output voltage
terminals, but the ammeter will require a shunt.

If the volt meter is not already calibrated it will require a resistor in
series with the positive lead.
Depending on the movement of the meter the resistor could be around say,
49Kohm.

Good luck, Ken, G4KIR.

On Mon, 18 Dec 2006 07:03:19 -0000, "Ken chattenton"
wrote:

Hi from Ken,

"William Pence" wrote in message
...
In article Bephh.212$pr5.108@trnddc01, "west"
wrote:

I have a 40 amp, 13.8v supply and would like to add a voltage (0-15v)
meter
and an amp (0-50amp) meter. Cordially,
west

yep. the amp meter will definitely need a shunt. that value is dependent
on the actual coil current for full scale.

the voltmeter can just wire directly across the output voltage
terminals, but the ammeter will require a shunt.

If the volt meter is not already calibrated it will require a resistor in
series with the positive lead.

or the negative lead

In article ,
budgie wrote:

On Mon, 18 Dec 2006 07:03:19 -0000, "Ken chattenton"
wrote:

Hi from Ken,

"William Pence" wrote in message
...
In article Bephh.212$pr5.108@trnddc01, "west"
wrote:

I have a 40 amp, 13.8v supply and would like to add a voltage (0-15v)
meter
and an amp (0-50amp) meter. Cordially,
west

yep. the amp meter will definitely need a shunt. that value is dependent
on the actual coil current for full scale.

the voltmeter can just wire directly across the output voltage
terminals, but the ammeter will require a shunt.

If the volt meter is not already calibrated it will require a resistor in
series with the positive lead.

or the negative lead

that is entirely possible. in general, I have seen voltmeters that are
already cal'd with this resistor internal...
this might have been special case (s). it has been a while.