Need help with my multimeter

PilouPilou

PilouPilou

Well-Known Member
1 hour I try to measure mA with my multimeter but nothing works! it's a 3xCXB in serie.. the light works well but when I try to connect my multimeter.. no light... no measure. I follow all the advices I've seen in the excellent video of @ledgardener and I tried many possibilities of connection with the multimeter but nothing! Here are 2 pics.. if someone can help, maybe I did a mistake... idk! thanks in advance for your replies.

potentio.jpg potentio1.jpg
 
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freemanjack

freemanjack

Well-Known Member
PilouPilou said:
1 hour I try to measure mA with my multimeter but nothing works! it's a 3xCXB in serie.. the light works well but when I try to connect my multimeter.. no light... no measure. I follow all the advices I've seen in the excellent video of @ledgardener and I tried many possibilities of connection with the multimeter but nothing! Here are 2 pics.. if someone can help, maybe I did a mistake... idk! thanks in advance for your replies.

View attachment 3996593 View attachment 3996594
Click to expand...
It could be the fuse in your meter, it only fuses the current circuit so the other functions of the meter will work but current will not. I have an almost identical meter but I always use a clamp meter to measure current, any cheapo one will do, you only need 'fairly accurate' I use something like this for my current measurements;
https://www.maplin.co.uk/p/uni-trend-current-clamp-multimeter-used-b76nw
 
RM3

RM3

Well-Known Member
you're in the 10 amp slot for lead and meter is set to milli amps

either turn the knob to one of the 10's or put the lead in the MA slot

you're also set to DC
 
PilouPilou

PilouPilou

Well-Known Member
RM3 said:
you're in the 10 amp slot for lead and meter is set to milli amps

either turn the knob to one of the 10's or put the lead in the MA slot

you're also set to DC
Click to expand...
so I need to turn the knob on number 10? the lead.. you mean the red wire of the multimeter?
 
RM3

RM3

Well-Known Member
PilouPilou said:
so I need to turn the knob on number 10? the lead.. you mean the red wire of the multimeter?
Click to expand...
yes, if you want to measure amps up to 10 amps (if over it'll blow a fuse)

put the red lead + in the MA/Hfe slot if you wanna measure milli amps (millionth of an amp)

the A --- 10 (to the left) is DC the A~ 10 (to the right) is AC
 
PilouPilou

PilouPilou

Well-Known Member
RM3 said:
yeppers
Click to expand...
well it seems my multimeter is broken because it doesn't work! this morning with ones of my first measurement the light switched on.. I turned the potentiometer and bim! the light switched off... I'm not sure but I think I was on the mA/hfe slot...maybe now my multimeter is broken
 
SouthCross

SouthCross

Well-Known Member
PilouPilou said:
well it seems my multimeter is broken because it doesn't work! this morning with ones of my first measurement the light switched on.. I turned the potentiometer and bim! the light switched off... I'm not sure but I think I was on the mA/hfe slot...maybe now my multimeter is broken
Click to expand...

Pawnshop and rent' one. Find a decent one at the pawn. Test it, buy it, use it, then go back and pawn it back to them.

Before you buy, ask them how much they'll buy it back for....


'Pawnshop rental'
 
ChiefRunningPhist

ChiefRunningPhist

Well-Known Member
Multimeter from Wal-Mart...
0929460c-b940-4a8a-b1cb-f1c42c98f44b_1.17ae0fddef1fcbb5c6685bf8f84e11c6.jpeg

Is it 250v or 500v, what's the 2nd volt range setting? Am I crazy or is this goofy??

Only 1 set of lead receptacles?

Trying to determine what to drive these at (30w actual draw is manufacture default) if I used the LEDs to build my own light..
1215180807~2.jpg 1215180735.jpg

Original post with pics of built-in driver..
https://www.rollitup.org/p/14639943/
 
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