Electronics > Electronics

passing micro-amps through a diode with high efficiency?

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Admin:
I need to pass about ~0.01mA at ~4V through a diode at high efficiency. (that's 10uA, folks)

Anyone have any idea if that would even work? And what kind of efficiency I could expect?

All the datasheets on diodes I've seen don't look at anything lower than 1mA . . .

billhowl:
Have you try 1N60?
http://www.taitroncomponents.com/catalog/Datasheet/1N60.pdf

Admin:

--- Quote from: billhowl on January 04, 2013, 05:25:56 PM ---Have you try 1N60?
http://www.taitroncomponents.com/catalog/Datasheet/1N60.pdf

--- End quote ---
errrrr . . . what's special about this diode?

It says:
Minimum Forward Current - 4 mA @ VF=1V

billhowl:
No, 1N60 had no minimum, it use for RF with low level signal.

or
You can Ops Amp
http://en.wikipedia.org/wiki/Precision_rectifier

waltr:
Figure 1 of the 1N60 DS supports what billhowl says.

I don't recall a diode having any minimum forward current, only a minimum forward voltage to over come the forward voltage drop. For the 1N60 this seems to be just over 0.2V at very low current.

Admin, have you tried measuring this with a few diodes?

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