Main > Main Forum
Can I send 5V power through a serial cable pins ..... (not wires)
<< < (4/5) > >>
unclet:
mountain
Does using the solid wire from a resistor matter compared to any other type of wire?

Currently I am using 20AWG stranded wire.   Can I bridge two pins with this stranded wire OR should I use solid 20 AWG wire instead OR must I use the solid wire from a resistor?

pinballjim
Do you have a picture of this micro-relay?   I have no idea what this looks like.

Franco
What is a annode?
DaOld Man:
mountain
Does using the solid wire from a resistor matter compared to any other type of wire?

It doesnt matter what type of wire you use, as long as it is copper and will fit in the pin hole. (Solder side of the pin).

Franco
What is a annode?

Anode is one "side" of the diode. It is not the side that is marked with a band. It also connects to the positive flow of current. The side with the band on it is called the Cathode. It connects to the negative power flow.
Look at attached diagram.

The next attached diagrams shows an led, which is basically the same as a diode.
(Images stolen from http://en.wikipedia.org/wiki/Light-emitting_diode)
unclet:
Ok, here is the picture of the back side of the serial adpater I want to use.   The GREEN lines represents the copper wire between the two pins and the RED lines represent the 5V power from the power supply.

Is this how I should be wiring it up from the power supply side?

DaOld Man:
That should work.
If it was me, and I would do what mountain suggested.
Solder short pieces of wire to each pin, then connect them all together.
This would be a lot simpler than using jumpers between the pins.
In the attached drawing, I show how I would do it, if you are only running the power supply through this plug and nothing more.
There are nine pins, Im using 4 for positive, and 5 for negative.
This will work and should carry pretty heavy loads, but lets examine this for a minute.
The current will flow through each pin. If the resistance is exactly the same on each pin, then the current will be exactly divided between the pins.
Example: if the total current draw is 4 amps, then each pin in the 4 pin group will carry 1 amp.
But if a pin develops a bad solder joint, or breaks off, then that pins load will be placed on the other pins, making each pin carry 1.34 amps. If another pin breaks, the current on the remaining two will be 2 amps each.
So what you are doing is perfectly ok, but just keep this in mind.
unclet:
Thanks for the picture .... I have a few more questions is you dont mind.   Sorry about this, but I just do not want to burn anything ..... hope you dont mind.

1) I need to connect the BLACK ground wire from the power supply to the serial adapter as well ..... can I use one pin by itself to do this? 

2) Does the "negative" wires going to the adapter (in your picture) represent the wires coming from the negative side of the LED light?   Hmmm .... maybe the "negative" wires represent the "ground" wire of the power supply?

3)  The adapter in the picture is the "female" serial adapter since it is safer to connect this one to the power supply.   I understand what to do with the RED wire coming from the power supply and going to the serial adapter thanks to your picture.   Now, for the "male" adapter side I believe I would have to attach 4 red wires to the same corresponding pins on the female adapter thus allowing me to attach 4 LEDs to each of these 4 RED wires .... correct?   Do I need to join all the RED wires back together on the male adapter side a well?
Navigation
Message Index
Next page
Previous page

Go to full version