flemming
Well-known member
I was checking the Vf of some D9E diodes that I had and the numbers I was getting were way off, so I checked them with my DMM and got something more reasonable. I started testing a bunch of different diodes and here's what I found:
As with measuring anything with two different tools, they of course don't match. But the differences get quite a bit bigger when testing GE diodes. Given that the 1N5817 is off as well perhaps it's just accuracy at lower voltages. Has anyone else seen this or is mine just junkier than the usual junk? Is the moral of the story, cheap things are cheap?
Robert
| Component | DMM (HT118A) | TC1 | Difference |
|---|---|---|---|
| 3mm Red LED | 1.76 | 1.91 | +8.5% |
| 5mm Green LED | 1.90 | 2.05 | +8.0% |
| 1N5817 | .213 | .266 | +25% |
| 1N4148 | .611 | .705 | +15.9% |
| 1N34A | .280 | .386 | +38% |
| D9E | .308 | .510 | +66% |
| D9K | .276 | .406 | +47% |
As with measuring anything with two different tools, they of course don't match. But the differences get quite a bit bigger when testing GE diodes. Given that the 1N5817 is off as well perhaps it's just accuracy at lower voltages. Has anyone else seen this or is mine just junkier than the usual junk? Is the moral of the story, cheap things are cheap?
Robert
