Chosen Solution
Hi, Recently I ordered a power supply 30 volts 5 amps. I wanted to test the voltage with a voltmeter so if I put it on 5 volts the voltmeter starts at about 6.5 volts and just keeps going up little by little. So I figured it’s defective, I ordered another one from another company different model and it seems to be doing the same thing. Any input on this anybody? Update (03/28/2017) Here are the units I’m talking about. Thank you in advance.
Update (03/28/2017)
You will need to isolate a variable here. Either your PS is drifting or your voltmeter. If you set your PS to 5V, does the reading on the display of the PS drift similarly to the display of the voltmeter? If it does you should return your PS under warranty. If you measure a known voltage source, such as a 9V battery or 3 X AA batteries, does the measured voltage on your volt meter drift? If it does, then you volt meter is defective and needs to be replaced. Can you post a picture of your voltmeter. There are many poor quality meters on the market.
Measure with dummy load on supply Update (01/11/2021) Typically,100 watt lightbulb
Typically a 100 watt lightbulb
