Diode Matching Unit

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I bought 500 1N4148 diodes. I found I could match them so close the meter wouldn't move at all. A bad match is anything more than about 2 or 3 ua. I bought a matched set for comparison and they were about 3ua apart. It didn't take long to find almost perfect matches and it was well worth it in the mixers performance. I used a ziff socket for holding the diodes because it was easy to clamp them into it.

Jerry K5LRU


Many multimeters have a Diode test on them. You can simply use this to find diodes with matching tests that will provide you with a matching pair of diodes. Also, the Minima schematic has a very simple circuit that you can use in the bottom left to use any multimeter to test diodes. From everything I've read, this is a very worthwhile step. -Source

--KE0BLL (talk) 05:06, 29 January 2015 (UTC)