Reply to "How to determine DC positive wire and negative wire from a wall plug transformer?"

SteveHOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

With an analog meter correctly configured to measure DC Voltage and its red positive lead connected to the DC power supply positive and negative test lead to supply negative, the needle will point to the Voltage the power supply is producing.

This voltage may be higher than specified on the power supply's label when no load is connected other than the meter. When a greater load is connected, the measured voltage will drop a little. This is normal.

If you have additional questions about setting up your specific meter to measure DC Voltage or its other functions, either posting a picture of its front panel or its make and model would be helpful. There are some variations for the test lead connections to it and for the settings among different analog meters.

I hope this helps.

8/14/224:43 PM

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