- #1
Pythagorean
Gold Member
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So I have a power supply, 9-12 V output and I have a component that takes 9-12 V.
When I plug the power supply into the wall and measure the potential across it's leads, I get 16V. I put a resistor across the leads and measure the diff across the resistor. Again, 16V. I look at several other power supplies on the same order (9-12 V). All 16 V.
What's going on here?
(these are not benchtop power supplies, but random manufacturer power supplies originally intended for other products)
When I plug the power supply into the wall and measure the potential across it's leads, I get 16V. I put a resistor across the leads and measure the diff across the resistor. Again, 16V. I look at several other power supplies on the same order (9-12 V). All 16 V.
What's going on here?
(these are not benchtop power supplies, but random manufacturer power supplies originally intended for other products)