Quote:
Originally Posted by twoton
Wanting to confirm the results of my first round of tests, I went to the Fluke site to read up on diode testing;
https://www.fluke.com/en-us/learn/be...tal-multimeter
Unfortunatly, my fancy dancy Fluke meter does not have a diode test mode. But the POS HF meter that I got for free does.
So round two. POS HF multi meter confirms what the Fluke was saying. Diode failed open.
Round three. Home made test light. Clip one end on the B+ terminal of the battery, the other end to the cathode side of the diode. Jumper from the anode side back to the battery B-. I think you can see from the picture...
Reverse connections and... yup. Diode tests 'OK'.
So here's my question to you all, what am I doing wrong in my first two tests to be getting these contradictory results? |
Got a couple questions on your testing with the battery. Forward biased you should of read around .6 volts across the diode with a voltmeter (+ to anode - to cathode) reverse biased ( + to cathode - to anode) you should of read your battery voltage across the diode with a voltmeter. That is basically what you are doing with the 9 volt battery in the multimeter in diode test mode.