I received a cheap voltmeter/ammeter from eBay but it did not have a shunt on it (the thick wire mounted on the meter next to the thick BLACK and RED wires) and because of that, all I get in AMPS on the meter is 104 when I hook any load to it. I've put a short copper wire (approx 10AWG 2" long) across the two thick wires and a DC motor increased in speed but the meter read 00.0 AMPS. I put a 10 ohm resistor across the two wires and a DC motor increased in speed but the meter read 40.0 AMPS. I then tried a 5 ohm across the two wires and a DC motor increased in speed but the meter again read 00.0 AMPS.
My questions are...
1. What resistance wire can I put in there to make it complete?
2. If I'm putting the shunt in the wrong place, how should I add the shunt? (I have tried soldering directly to the board)
3. Should I just trash the meter? (I got a refund from the seller)
p.s. The meter works fine for reading VOLTS.
p.p.s My power supply only puts out 12 amps at best!
My questions are...
1. What resistance wire can I put in there to make it complete?
2. If I'm putting the shunt in the wrong place, how should I add the shunt? (I have tried soldering directly to the board)
3. Should I just trash the meter? (I got a refund from the seller)
p.s. The meter works fine for reading VOLTS.
p.p.s My power supply only puts out 12 amps at best!
Attachments
-
426.6 KB Views: 33