Hello please help, I have 2 analog 30 amp meters with shunts I have wired up and working fine but these new digital 10 amp meters are confusing and the seller stated I do not need a shunt.
I`m confused if it needs a separate power supply for the led as I tried one of them with same power supply and one with separate power supply for led it lights up but amp readings drop rapidly and or are different.
It does state no extra supply for 4.5-30 V but like I said led would not light up but maybe I did something wrong ?
I don`t want to short anything out so advise would be much appreciated. I have contacted seller but who knows what kind of reply it will be...
Here is the link to the meters I have https://www.ebay.com/itm/173647061094
another meter of similar design show 2 ways to wire up, one with same power supply as load and one with separate dedicated power supply for led.
Specs here .
1. High-precision measurement of DC 0-10A current, no extra supply for 4.5-30V .... ?
2. Simple wiring, with anti-collision shell design, dust-free workshop production, imported original chip.
3. Low-start operating voltage, reverse-connection protection, reverse-non-burning, and fine-tuning function.
Specifications:
Input voltage: 4.5-30V
Measuring range: DC 0-10A
Current measurement error: 1%
Working current: < 30 mA
Display mode: 0.56" LED digital display
Refresh rate: about 200 ms / time
Line length: 19.5 cm/7.68"
Working temperature: -10 ° c~ -65 ° c
Working humidity: 10%-80%
Digital display color: red, yellow, green, blue
Product size: 47*28*17mm/1.85*1.10*0.67"
Net weight: 16g
Gross weight: 24g
I`m confused if it needs a separate power supply for the led as I tried one of them with same power supply and one with separate power supply for led it lights up but amp readings drop rapidly and or are different.
It does state no extra supply for 4.5-30 V but like I said led would not light up but maybe I did something wrong ?
I don`t want to short anything out so advise would be much appreciated. I have contacted seller but who knows what kind of reply it will be...
Here is the link to the meters I have https://www.ebay.com/itm/173647061094
another meter of similar design show 2 ways to wire up, one with same power supply as load and one with separate dedicated power supply for led.
Specs here .
1. High-precision measurement of DC 0-10A current, no extra supply for 4.5-30V .... ?
2. Simple wiring, with anti-collision shell design, dust-free workshop production, imported original chip.
3. Low-start operating voltage, reverse-connection protection, reverse-non-burning, and fine-tuning function.
Specifications:
Input voltage: 4.5-30V
Measuring range: DC 0-10A
Current measurement error: 1%
Working current: < 30 mA
Display mode: 0.56" LED digital display
Refresh rate: about 200 ms / time
Line length: 19.5 cm/7.68"
Working temperature: -10 ° c~ -65 ° c
Working humidity: 10%-80%
Digital display color: red, yellow, green, blue
Product size: 47*28*17mm/1.85*1.10*0.67"
Net weight: 16g
Gross weight: 24g