Best place to inject power?

[jimcllc]

Was reading a DIY wiki and it says "Using Power Injection at the end of a String nominally reduces the current thru the wire to the beginning of the string in half, since the Power Injection Wires carry roughly half of the current for the string." I am unsure if this is good or bad?

 

[AAH]

It's not strictly half as it depends on the wire sizes in use and the thicker wire will have a lower resistance and will thus carry more of the current. By carrying half the current you reduce the voltage drop to half which is the aim of power injecting. Ideally you always want to minimise the voltage drop to less than when "pinking" of the pixel occurs or latching up or flay performance occurs.

 

[jimcllc]

So instead of injecting power at the end, better to inject where the pinking begins?