RE: ATM Amp Hours? Power requirtements for dew heaters, etc.

["Cran Cowan" <cowan@burnsnet.com>]

Hi Jay,

To convert amperes (A) to milliamperes (mA), divide amperes by 1000.  The
"milli" stands for 1/1000.

Often when making power calculations, I add the power consumed by each
component, usually given in watts (W).  Or if you know the voltage across
the component and the current through it, watts = volts * amps.  Add all the
watts together and make sure your converter is rated to supply at least 110%
of that total.

Good luck,
Cran Cowan

BTW
Amp-hours is a rating for a battery's capacity.  Since an Amp (A) is one
Coulomb of charge flowing every second, one Amp-hour is:

 1 A-h = (Coulomb of charge / second) * (3600 seconds/hour) = 3600 Coulombs
of charge



> -----Original Message-----
> From: owner-atm@shore.net [mailto:owner-atm@shore.net]On Behalf Of
> BodyByJay@aol.com
> Sent: Tuesday, April 20, 1999 7:06 PM
> To: atm@shore.net
> Subject: ATM Amp Hours? Power requirtements for dew heaters, etc.
>
>
>
> I am trying to figure out if the 12V converter (110VAC to 12VDC)
> I have will
> be able to supply my Newt with the power it needs for the cooling
> fan, dew
> heaters, etc. so I am adding up all the ampere requirements.  The
> Kendrick
> Dew systems are rated in Amp Hours though.  Do you know how to
> convert that
> to amperes or milliamps?  I know there must be a formula.  Jim
> Kendrick told
> me that he couldn't even give me the resistance of his units (so I could
> compute power needs) because "the information is proprietary."  Funny but
> true.
>
> Jay D. Anderson, Bodybuilding Astronomer
>
> "Astronomy is a tool of the devil." --Helen  Boucher (from the movie "The
> Waterboy")
>