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1
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Posted
19/8/2003
in the catalogue it mentions that this meter is suitable for voltmeter and can be Adapted to be a current meter.
I was hoping the documentation that comes with the meter would shed some light on how, but it only mentions how to use it for a volt meter.
Does anyone know how, or can point me in hte right direction as to how to "adapt" this meter to be a current meter.
Thanks
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4
Posts |
Posted
28/8/2003
Basically the easiest way to do this is to put a very low value resistor in the line you wish to measure the current through and read the volt drop across the resistor. most cheap multimeters use about 40mm of 1.5mmDia copper wire which gives a very small voltdrop but enough for the pannel meter. The reading should give an indicationof current but you will need to play with the copper a bit and compare to a multimeter (file a bit off the copper to increase the voltdrop, tin it with solder to decrease). the voltdrop should be proportional to the current in a linear manner.
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Johnny Camenzuli
5
Posts |
Posted
29/6/2004
I found a simple methode myself in measuring current, all I did is connected the ground of my source to the ground of my load. Then I put a power diode at the positive end of the source and connected the diode to the positive end of the load. After that I put a standard 1-10 range metre across the diode. You should put a resisitor at either end of the metre to measure in different ranges, like 10mA, 100mA, 1000mA 10A, 100A. Just change the value of the resistor to do this.
You should put the right diode in this circuit to support the load. If you intend putting a high load on the circuit, you could use one strong power diode if you can find one. Or you can parrelel diodes.
Hope this helps... I think it would. :)
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Johnny Camenzuli
5
Posts |
Posted
29/6/2004
I found a simple methode myself in measuring current, all I did is connected the ground of my source to the ground of my load. Then I put a power diode at the positive end of the source and connected the diode to the positive end of the load. After that I put a standard 1-10 range metre across the diode. You should put a resisitor at either end of the metre to measure in different ranges, like 10mA, 100mA, 1000mA 10A, 100A. Just change the value of the resistor to do this.
You should put the right diode in this circuit to support the load. If you intend putting a high load on the circuit, you could use one strong power diode if you can find one. Or you can parrelel diodes.
Hope this helps... I think it would. :)
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Panel Meter QP5585