This 2.1mm barrel plug (female) to screw terminal will
come in very handy if you want a DC power connector that runs off a battery
pack or wired power supply. There is a 2.1mm DC plug on one end, and a screw
terminal block on the other. The terminals are labeled with positive/negative
assuming a positive-tip configuration (which is the most common). Simply hook
up your selected power supply to the terminal points and you have DC power Plug
with the output of your choice!
You can then fit a female 2.1mm DC barrel jack to your
circuit, motor, breadboards, etc. for easy, variable power application!
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