Re: Power supply transformer setup questions... OPP's

<snip>

> Using my origional post was wrong in that I used one the 29.4 watts
> from the two 3.5 amp motors. 60 volts / 29.4 = 2.04
>
> flipping between the spreadsheet and yahoo and rushing out to a
> jobsite made for less than optimum conditions.
>
>
> I'm going to have to go back and read some posts to get the power

to

> each coil part correct. I thought I had been correct that only one
> coil FLA was used for sizing the power supply as both coils will
> never be charged 100%, but rather some varying percentages that

don't

> exceed the FLA.
>
> Dave
>

<snip>


Going back, I came across post 39,619 from Mariss about Mechanical
power.


a 3 volt, 4 amp motor delivers 108 watts of mechanical power and
consumes 51 watts of inefficiencies in the way of heat for a total of
159 watts.

This is a FAR CRY from the simple "volts times amps = watts" calc.


It seems the motor nameplate is to move the motor, and we are asking
a LOT more out of these things than just nameplate performance.

More study is needed.

scope or volte meter on the power supply to see what is happening ?

It seems that at the low voltage, we can charge the coil just so
fast, but with higher voltage, we can charge it faster, and that
means more steps per time period, and each step may have a nameplate
watt unit, but with 5,10 or 20 more units in the same time, the watts
will go up...

gotta... go now... head spinning.....


Dave