In another post, I was looking to use some C106D1G or 2N2222A's for controlling larger V and A to other appliances that the output pins could not handle.
Why ? well, simply because I already had these components.
But thinking about it, I think it would be wiser to use better components instead of trying to save a few cents.
So looking at other posts, I get the impression that I should be using a MOSFET, activated by the output pin ( with Resistor in series and a pull down resistor ) to control power to a 12V relay.
Please tell me if you see any flaws in this ( I need to go thru this learning curve ) :
I want to drive a small relay which, in turn, will activate a gates' magnetic lock or similar item (requires 12V 1A).
The relay spec is : N4078 2c 12v 0.2(w). 1A/125VAC. 2A/30VDC.
So my logic is :
1. Relay can easily carry the current required by the end device.
2. 0.2W / 12V = 16mA required to drive the relay coil.
So I need to find a MOSFET that I can drive with the output pin, and can easily handle 12V 16mA. Correct ?
Here's where the difficulty starts :
Our local supplier has stock of IRLZ44NPBF MOSFETs.
Unfortunately, I don't know what I am looking for on the datasheet in relation to :
1. what V is required to fully activate the MOSFET.
2. what A the MOSFET will draw from the output pin ( need to make sure it is within the specs for the board ).
3. is there a minimum current that the MOSFET will pass from S to D ?
4. what is the maximum that can pass thru the MOSFET ?
Once I know these values, I can highlight them on my datasheet (http://docs-europe.electrocomponents.com/webdocs/0791/0900766b807913d7.pdf
) and learn the terminology used. Then if you don't think this is the correct component, I can go searching for something better ( and available ).