given that my source voltage is 25V, i assumed that i should scale up this resistor. ill give that a try next time. Thank you
Rizalino de Guzman > On Feb 19, 2016, at 6:06 PM, Bill Pretty <[email protected]> wrote: > > Looking at your schematic, I believe that 1K is too large a value. It should > be about 240 ohms and R2 should be scaled accordingly. It could be that the > LM317 is taking too long to stabilize. You will notice that the application > circuit provided by the data sheet uses a 240 ohm resistor. > > From: [email protected] [mailto:[email protected]] On > Behalf Of Rizalino de Guzman > Sent: Friday, February 19, 2016 7:06 PM > To: BeagleBoard > Subject: [beagleboard] Custom Power Supply > > Hello, > I am currently trying to build a power supply based on an LM317 to provide > different voltage outputs, powered by a single voltage source. One of the > loads is a Beaglebone Black. I'm curious as to why my beaglebone black does > not turn on even when my p/s output is a steady 5V (give or take. my > simulations show 4.6V while my actual circuit produces around 5.3V). I'm > attaching a schematic of my LM317 power supply. When I hook up the beaglebone > on a DC power supply, it turns on. Any help would be appreciated. Thanks! > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
