I'm working on a LM317 based project and I'm curious what happens if the resistor network asks the LM317 for more voltage than it can put out? IE: the resistors call for 18v out but the circuit is only getting 13.5v in. From what I understand, 12v is the max the circuit could do. Does it just "hang" at 12v or does it shut itself down or something? I'm hoping for the former not the latter.
I've designed a basic thermally controlled fan controller for my wood stove using a LM317 and a thermistor and it will run 12v at 140F or so (wall temp a foot away or so), if it gets past that I don't want the fan to shut off, I just want it to stay full speed.
**broken link removed**
I've designed a basic thermally controlled fan controller for my wood stove using a LM317 and a thermistor and it will run 12v at 140F or so (wall temp a foot away or so), if it gets past that I don't want the fan to shut off, I just want it to stay full speed.
**broken link removed**
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