I'm trying to make a simple dc power supply w\/ a full bridge rectifier, 2 caps, a pot, and a lm317. my transformer is a 120v to 25.2 v. I'm using this typical schematic and I know it works, but every time I turn the pot down to around 17v from a max of about 28v, the pot starts smoking, has any one<\/p>\n","protected":false},"excerpt":{"rendered":"
I'm trying to make a simple dc power supply w\/ a full bridge rectifier, 2 caps, a pot, and a lm317. my transformer is a 120v to 25.2 v. I'm using this typical schematic and I know it works, but … Continue reading