> Oh, now there's an important tip. I hadn't thought about the startup > voltages. Can I get away with putting a low-value resistor in front > of the input capacitor, which would limit inrush current and cause Vin > to ramp up slowly when power is connected? That might be cheaper and > smaller than the zener. Plus, even zeners have a non-zero response > time -- might the regulator be damaged during those microseconds? > (nanoseconds?)
http://www.national.com/an/LB/LB-47.pdf I used Zetex Transistors, and TI783, after several meltdowns of LM317HV and 2Nxxxx parts. LB-47 has some warnings, such as what happens during a output short to ground, of a floating regulator. -- http://www.wearablesmartsensors.com/ http://www.softwaresafety.net/ http://www.designer-iii.com/ http://www.unusualresearch.com/ _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
