I have a device that uses four 1.5V batteries. There are three voltages taken from these batteries: 6V, 3V and 0V. I'm trying to replace these batteries now with an existing transformer together with two LM317 doing some voltage regulation. I have built an tested my idea and it seems to work pretty well (if you don't count some occasional thermal shutdowns, I don't have a heat sink attached yet to my system). The load in my system is a DC motor. I understand what happens when the motor is connected to 3V and 0V pins nut my question is what happen when it is connected to 6V and 3V? Everything seems to work fine but is this breaking the 3V LM317 because current is going wrong way? Or more likely the current goes thru the resistors and I should check they don't burn?
There probably are much better ways to do this than using LM317, is there? What would you have done?
There probably are much better ways to do this than using LM317, is there? What would you have done?
Attachments
-
10.7 KB Views: 41