I want to make the power supply in which need to send the output of 20mA current which is provided to my wireless temperature sensor, I am using 9v battery cell.
I don't have much good knowledge about current amplification so I was thinking to start with Transistor circuit for current amplification.
I need some advice about how much minimum input current, I have to give to the transistor via 9v DC battery so that I will be able to achieve around 20mA output.
Any circuit suggestion or any theoretical explanation will be a great help to me.
Note: The sensor also has the standard version in which they provide the external power for input, which I am using with my storage containers.
I don't have much good knowledge about current amplification so I was thinking to start with Transistor circuit for current amplification.
I need some advice about how much minimum input current, I have to give to the transistor via 9v DC battery so that I will be able to achieve around 20mA output.
Any circuit suggestion or any theoretical explanation will be a great help to me.
Note: The sensor also has the standard version in which they provide the external power for input, which I am using with my storage containers.