I have pic set up to drive some accessory stuff in a auto application, I have a 7805 5V regulator, but I'm not sure about some things...
Can I hook a 12V lead directly to the regulator or is it going to need a resistor or such ? (regulators current handeling is 1amp, but my pic will draw MUCH less then that, or is it going to draw the batteries current to convert... I dont know much about this stuff)
Also, I notice I'm not getting a steady voltage, If off a 9V I'm getting about 4.50V, if from the car battery its ~5.17V. I dont have any caps on this circuit mainly b/c I have no idea where they go, anyone have any advice on this ?
Thanks,
Can I hook a 12V lead directly to the regulator or is it going to need a resistor or such ? (regulators current handeling is 1amp, but my pic will draw MUCH less then that, or is it going to draw the batteries current to convert... I dont know much about this stuff)
Also, I notice I'm not getting a steady voltage, If off a 9V I'm getting about 4.50V, if from the car battery its ~5.17V. I dont have any caps on this circuit mainly b/c I have no idea where they go, anyone have any advice on this ?
Thanks,