I need a series of led's (about 7) to use as a voltage reference. I want to use led's because I need a certain tempco and using a series of led's for the voltage reference will give me the right tempco. Ideally I'd like a part that I can get cheap (naturally), maybe from one of the surplus houses like allelectronics, goldmine or bgmicro. But I haven't found anything from them, so I might have to go to a regular supply house. I used digikey's excellent web site to search for diodes in series or array but didn't get anywhere. To make the prototype I soldered led's in series by hand, but I may end up making a bunch more of these for friends and I'd like to find a part that has led's (or for a distant second choice, ordinary silicon diodes) in series, or perhaps array. For reasons that I don't want to go into here, I won't use a single led and divide the voltage up resistively. Any info on availability of a part like this? Nothing fancy, just a bunch of led's in series, and the smaller the better.
- posted
18 years ago