How Can I Get 4.5 Volts From The 360 ?, how can i get 4.5 volts from the 360 ? Options

[dopesun]

Here are the specs of the part that i want to connect to the 360 mobo. If it matters its a Xenon.

Operating Voltage 4.5V (3 x AAA batteries)
Operating Current < 50 mA
Standby Current < 5 uA

Question is, can I connect it straight to the 5v source? or do i add resistors like you would for LEDs?

[sniffinpoprocks]

A couple resistors will do the trick but for most devices, 5v will be fine. What's the device?

edit..
actually, you just need one resistor that's 1/10 of the resistance of the device itself, that will drop .5v from the 5v and give you 4.5

This post has been edited by sniffinpoprocks: Dec 22 2011, 12:49 AM

[dopesun]

A couple resistors will do the trick but for most devices, 5v will be fine. What's the device?

edit..
actually, you just need one resistor that's 1/10 of the resistance of the device itself, that will drop .5v from the 5v and give you 4.5

Would a 10 ohm, 1/8W resistor work?

Also, correct me if im wrong. It should be connected to positive (+).

This post has been edited by dopesun: Dec 22 2011, 01:54 AM

[dopesun]

Also, is this 5v spot standby, or switched? Im thinking its switched.

[RDC]

The thread that pic came from tells if it's 5vsb or not.

Fresh Alkaline batteries will be around 1.6v or so each, which is 4.8v total for the device in question. The Regulated 5v from the 360 isn't going to kill whatever you're wiring up in there.

You also don't need any Resistor at all, and if you did it wouldn't matter which side it was on, just so long as it's in there.

[dopesun]

The thread that pic came from tells if it's 5vsb or not.

Fresh Alkaline batteries will be around 1.6v or so each, which is 4.8v total for the device in question. The Regulated 5v from the 360 isn't going to kill whatever you're wiring up in there.

You also don't need any Resistor at all, and if you did it wouldn't matter which side it was on, just so long as it's in there.

RDC thanks bud.. The write up for the pic doesn't really state much.

It says "Here is the older good 5v spot and is still a good place to get 5v from, but some may not like soldering onto that SMT Capacitor there. You can also use the small spot there at DB6G1. There is also a 12v spot there at the tab of the MOSFET Q6F1. Soldering onto a tab of one of these MOSFETs can be difficult if you don't have a Soldering Iron that can sustain the heat long enough to get the tab and large plane it's soldered to hot enough to flow new solder on and melt the old as well[i]."

I guess i should assume cause it doesn't say stand by, its switched...

I guess i wont add a resistor then. hopefully the circuit board dont blow...