- #1
StephenDoty
- 265
- 0
Hello all!
I have created a basic electromagnet using copper wire coiled around a nail. When I hook a DMM in series with the electromagnet and my 12v 3Amp DC power supply, the DMM shows that the amperage fluctuates. It will not come to a certain number or switch between two numbers that are very close together. It is almost like the current from the DC power supply is acting like AC current. Is it normal for the amperage to fluctuate so much? Does this happen because of the coil or is my power supply messed up?
Thanks.
Stephen
I have created a basic electromagnet using copper wire coiled around a nail. When I hook a DMM in series with the electromagnet and my 12v 3Amp DC power supply, the DMM shows that the amperage fluctuates. It will not come to a certain number or switch between two numbers that are very close together. It is almost like the current from the DC power supply is acting like AC current. Is it normal for the amperage to fluctuate so much? Does this happen because of the coil or is my power supply messed up?
Thanks.
Stephen