Author Topic: Axon Power Supply  (Read 3871 times)

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Offline hendrachubbyTopic starter

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Axon Power Supply
« on: June 18, 2009, 03:36:46 AM »
Can I use 9V battery ?
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Offline SmAsH

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Re: Axon Power Supply
« Reply #1 on: June 18, 2009, 06:27:52 AM »
*sigh* yes... but bear in mind... if using servos they will receive 9V which is bad for most servos.
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Offline hendrachubbyTopic starter

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Re: Axon Power Supply
« Reply #2 on: June 18, 2009, 06:32:59 AM »
i'm not using servos...i just use the regulated pin... thx for the info
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Offline SmAsH

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Re: Axon Power Supply
« Reply #3 on: June 18, 2009, 06:37:03 AM »
ahh ok, then you will be fine, but it is a bit of a waste and the regulator *may* get hot.
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Offline awally88

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Re: Axon Power Supply
« Reply #4 on: June 18, 2009, 08:21:31 AM »
If you have something smaller it would be better as there is a 5V regulator on it which will convert 9V -> 5V, the 4V difference is given off as heat which is bad. If you do run off a 9V battery find a heat sink for the regulator and it hopefully won't be too bad.
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Offline hendrachubbyTopic starter

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Re: Axon Power Supply
« Reply #5 on: June 18, 2009, 08:33:22 AM »
anyone have tried ? how much heat it will produced ?
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Offline Admin

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Re: Axon Power Supply
« Reply #6 on: June 18, 2009, 02:22:03 PM »
power = voltage drop * current

power = (9V - 5V) * 0.5A (what is your current draw?)

power = 2W of heat

then look at the voltage regulator datasheet to match that with temperature
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Offline hendrachubbyTopic starter

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Re: Axon Power Supply
« Reply #7 on: June 20, 2009, 06:37:29 AM »
okay i already tried it, with the heatsink, and it works fine...even there the regulator a bit warm
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