Considering a PC power supply with my Cellpro 4s

[mikelebron]

Picked up my parts from Rat Shack yesterday for 12.00 total. Got to spend a little time with it last night. I should finish it up tonight. I intend to just shrink wrap unused wires of the same color together, or would it be preferable to just cut them off at the circuit board and forget about them?

Dan

Cut them off.. no sense in risking one of them to come loose and shorting something out..

[ghopper]

Roger that.

[ghopper]

Just finished.....whooooowhoo......reading 12.86 volts with digital multimeter.

Dan

[mikelebron]

Just finished.....whooooowhoo......reading 12.86 volts with digital multimeter.

Dan

Dont forget to post pic of the beauty

[ghopper]

Will do. I am just hanging the ceramic resistor outside the box at the moment. I wanted to see how hot that little bugger got. How did you mount yours inside the case? Using zipties, or will they melt with the heat?

Dan

[mikelebron]

Will do. I am just hanging the ceramic resistor outside the box at the moment. I wanted to see how hot that little bugger got. How did you mount yours inside the case? Using zipties, or will they melt with the heat?

Dan

If you look on page 1 of the thread, on top of the power supply I drilled a few holes, sanded off to expose the metal on the case (mine was painted flat black), used a little thermal grease (like what you use on CPUs) and mounted under the holes I dilled with the center touching the metal with thermal grease using zip ties to hold it down. It wont get hot enough to melt the zip ties (of course depends on PS) for the most part if properly cooled... No issues so far for me.. the case of the power supply will act as a big heat sink and the holes will allow air flow around the resister.

[ghopper]

Thanks,

I'll give that a try tonight. Have plenty of both items. I charged one of my batteries this moring and worked like a champ. I hope to discharge it this weekend :banana

[mkoutnik]

I mounted the resistors on one of the internal heat sinks using thermal compound.

[mikelebron]

I mounted the resistors on one of the internal heat sinks using thermal compound.

I would not recommend this as the heat dissipated from the component that the heat sink is already cooling could be higher then the thermal tolerances of the resister; unlikely but possible. In addition, if not true the resister could actually transmit the heat through the heat sink to the component thus causing that component to prematurely fail... all in all.. not a good idea.

[mkoutnik]

Thanks for the heads up...I'll move it!!