Objective: I'm new to electricity and trying to convert my mirror integrated with LED work with a power bank. I need to find how much voltage and current is needed to make it work.
How can I measure the voltage and current it is using from the wall socket? I searched that using a multi-meter:
- Voltage: Connect it in parallel and measure the voltage
- Current: Connect it in series and measure the amperage
However, since wall outlet is AC and probably the light is DC, how can I actually measure it? For voltage there is no positive (+) or negative (-) from the power source to be able to do it in parallel. And for amperes, where am I supposed to put the probes?
PS: If there is any other device simpler to use that can help me with other than multi-meter, please mention it. Thanks.