Alt-BEAM Archive
Message #05096
To: beam@sgiblab.sgi.com
From: Senior kyled@scruznet.com
Date: Wed, 07 Jul 1999 23:07:25 -0700
Subject: [alt-beam] Re: Resistors
Oh yeah, I forgot where the resistors were. :)
I was thinking the resistor was inbetween the motor and the cell.
Kyle
Bob Shannon wrote:
>
> 1/16 watt resistors work fine in a photopoper.
>
> Resistors are rated for constant heat dissapation. The resistors in the popper
> engine are not under this sort of load at all. People use them all the time.
>
> Senior wrote:
>
> > Well, I can help you figure it out yourself ;)
> > Watts = Current * Volts
> >
> > So assuming your motors draw at most 50 milliamps, and your solar cell
> > puts out 3.5 volts at most, the wattage is:
> > .050 * 3.5 = .175 = 7/40
> > 1/16 is the same as 2/32, which is smaller than 7/40, so, no, 1/16 watt
> > resistors won't work :)
> >
> > Kyle
> >
> > RoboDR@aol.com wrote:
> > >
> > > What is the smallest watt resistor that can be used on the photopopper
> > > circuit? For example could I use a 1/16 watt resistor? Or would it > burn out?
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