I need to be able to run two photodiodes that require a bias voltage of at least 40V (this might need to be a little bigger, as I'm planning on using them for scintillation detection). They need to be able to run for two hours off of a lightweight battery. This is because they will be on a weather balloon for a long ride (this is my senior seminar project) and the weight of the payload can't be too high.
The Attempt at a Solution
I was thinking of using a series of op amps, but I'm concerned that simply using op amps to increase the output voltage of (for example) a 9V battery will drain the battery too quickly. A link to the specific photodiodes I'm using is http://www.mouser.com/ProductDetail/First-Sensor/PS10-5B-TO52S13/?qs=sGAEpiMZZMt9rZLnhhqRzxxh2B7IPT45 [Broken]
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