Hi guys this is my first one, so be gentle.
I have just finished a construction identical with the one you can see in this link:
http://www.garyseronik.com/?q=node/52
If you go to the BOTTOM of the link's page you'll see a simple LM317T voltage regulator circuit. It is exactly what I've made.
So to the question:
This thing has to be portable, so the power source has to be a battery.
My first thought was to power it of a classic 9V alkaline battery, on second thought I presume that the working time such a battery will give me will be minimal.
So now I am stuck between buying a 12V lead acid "UPS type" battery OR powering it directly from my car battery (with a direct connection to the poles of the car battery).
I would prefer the CAR battery solution since it's free (I have it already).
If I buy a UPS 12V battery, I will also have to buy a charger for it which sums up to approximately 50 - 60 Euros which is double the cost of all the other stuff for this project.
So, if I use the car..
a) Am I going to fry my circuit and/or motor?
b) Am I going to electrocute myself?
c) Am I going to damage my car's battery?
Secondly, since I have read that linear regulator circuits waste a lot of energy, will the excess voltage (my motor runs on approximately 3 - 3.8V) which is going to be turned into heat be too much?
I can't understand the amperage stuff so I'm worried that although the motor "draws" only a tiny amount of current, the LM317T circuit might draw a large current and cause problems to my or my car's or my circuits health.. : )
Help the noob guys!
Thanx.
I have just finished a construction identical with the one you can see in this link:
http://www.garyseronik.com/?q=node/52
If you go to the BOTTOM of the link's page you'll see a simple LM317T voltage regulator circuit. It is exactly what I've made.
So to the question:
This thing has to be portable, so the power source has to be a battery.
My first thought was to power it of a classic 9V alkaline battery, on second thought I presume that the working time such a battery will give me will be minimal.
So now I am stuck between buying a 12V lead acid "UPS type" battery OR powering it directly from my car battery (with a direct connection to the poles of the car battery).
I would prefer the CAR battery solution since it's free (I have it already).
If I buy a UPS 12V battery, I will also have to buy a charger for it which sums up to approximately 50 - 60 Euros which is double the cost of all the other stuff for this project.
So, if I use the car..
a) Am I going to fry my circuit and/or motor?
b) Am I going to electrocute myself?
c) Am I going to damage my car's battery?
Secondly, since I have read that linear regulator circuits waste a lot of energy, will the excess voltage (my motor runs on approximately 3 - 3.8V) which is going to be turned into heat be too much?
I can't understand the amperage stuff so I'm worried that although the motor "draws" only a tiny amount of current, the LM317T circuit might draw a large current and cause problems to my or my car's or my circuits health.. : )
Help the noob guys!
Thanx.