[AZ-Observing] Re: Slightly off topic, but somehow related to observing
- From: Jeff Hopkins <phxjeff@xxxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Tue, 6 Jun 2006 16:23:01 -0700
If your inverter was creating a 350 watt load the current would be
350 /12 or nearly 30 amps.
That's amps not milliamps (mA).
With no AC load the Inverter would probably draw 50 to 100 mA. There
is an inefficiency using the inverter so if your motor is a 4 watt
motor that relates to 4 /110 or 0.36 amp (35 mA). With the motor
plugged into the inverter the total input current would probably be
around 150 mA DC. Now how long can you run the inverter with that
load using a 16 Ah battery? The only good way to find out would be to
test it. Fully charge the battery at home, connect up everything and
start the timer. Note when the inverter kicks off. As noted before
there will still be a lot of power left in the battery, but it is
unusable with the inverter. Inverter manufactures do that so you will
still have power to start your car. That's assuming you are using you
vehicles battery with the inverter.
Jeff
At 15:53 -0700 6/6/06, Rick Tejera wrote:
>Rick,
>
>My inverter is 350 Watts, Can I guess that 12v/350Watts would = about 34 Ma
>for a total of draw of 80 Ma?
>
>Thanks
>Rick Tejera
>President
>Editor SACnews
>Saguaro Astronomy Club
>Phoenix, Arizona
>saguaroastro@xxxxxxx
>www.saguaroastro.org
--
Jeff Hopkins
HPO SOFT
Counting Photons
http://www.hposoft.com/Astro/astro.html
Hopkins Phoenix Observatory
7812 West Clayton Drive
Phoenix, Arizona 85033-2439 U.S.A.
www.hposoft.com
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