Saves me time and trouble with customers.
For years I used a homebrew tester, but this one reveals problems with PS that I had to bring out a scope to verify. It even revealed noise peaks (bad cap) on one of the rails. The reading was actually fluctuating with the noise even though the average was right on spec.
This is now my first and fastest tester. Test it out with known good and bad supplies to see what it can do!! Awesome!
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