I am new to this stuff so bare with me...
I built a voltage regulator with a 7805 regulator and 2 10uF (35v) capacitors.
The regulator will have an input of 12.6 volts from a car battery. I tested the regulator with my multi-meter, and with an input of 12.6v, the output was 5.2 so that was good.
Now, I need to know what potentiometer I can use to be able to vary the voltage from 1.0-3.0 volts. The highest I will need it to go is 3 volts, so is there a resistor I can use to first get down to 3.0 volts, and then what potentiometer can I use to vary it down to 1.0 at lowest? This is all through a car battery as the 12v power source, and a 7805 voltage regulator, so I am not sure if you know the resistance or not. I was going to include the resistance in this post, but I am so new to this stuff that I don't actually know how to find the resistance of it.
If anyone could please help that would be great. If you need the resistance to answer, I will try to find it with my multi meter if someone explains how to check it. Thanks
-Joe
I built a voltage regulator with a 7805 regulator and 2 10uF (35v) capacitors.
The regulator will have an input of 12.6 volts from a car battery. I tested the regulator with my multi-meter, and with an input of 12.6v, the output was 5.2 so that was good.
Now, I need to know what potentiometer I can use to be able to vary the voltage from 1.0-3.0 volts. The highest I will need it to go is 3 volts, so is there a resistor I can use to first get down to 3.0 volts, and then what potentiometer can I use to vary it down to 1.0 at lowest? This is all through a car battery as the 12v power source, and a 7805 voltage regulator, so I am not sure if you know the resistance or not. I was going to include the resistance in this post, but I am so new to this stuff that I don't actually know how to find the resistance of it.
If anyone could please help that would be great. If you need the resistance to answer, I will try to find it with my multi meter if someone explains how to check it. Thanks
-Joe