I have built a power supply using an LM317: simulate this circuit – Schematic created using CircuitLab When the supply is on for a rather long time (several hours) with a respectable ...
I have a DC adapter rating 12 V 750 mA. I broke open its case and saw that its rectified but not regulated. I need 12 V for my design and do not want to buy a transformer. Do you know ...
I have a LM317 setup as a 3.3V regulator. I am getting 12V input from an Agilent Technologies E3631A Variable DC Power Supply. On this same board I also have a LM7805 regulating to 5V. All of my ...
I am wanting to build a custom power supply for myself, and am having trouble understanding how to drive the adjust pin with a microcontroller. The datasheet for it is here: ...
I know that ratio R1 to R2 determine the output voltage of LM317. E.g. R1 = 200, R2=330 ohms will produce about 3.3V. My question is, what if I use 2K and 3.3K for R1 and R2? What is the impact of ...