 | | Re: LEGO light sensor schematic —Dennis Clark
| | | | (...) Mike, Could it be that transistor 15 (I think), the one that is configured as a diode whose emitter is tied to the emitter on the output of the OpAmp potentially be some kind of non-linear negative feedback loop? Maybe to prevent oscillation (...) (26 years ago, 5-May-99, to lugnet.robotics)
| | | | | | | | | | Re: LEGO light sensor schematic —Michael Gasperi
| | | | | (...) Transistor 15 only has about .4V across it, so it is not operating in a very linear region. My best guess is that it helps make up for the drop in the follower 14 and provides some nonlinear gain. It tends to lower the gain for larger signals (...) (26 years ago, 5-May-99, to lugnet.robotics)
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