REFLECTOR: elevator trim

[Dave Philipsen]

Laurence Coen wrote:
> Andy,
>  
> You are correct in that it is a voltage divider but when you connect 
> it to the trim motor the resistance of the motor appears in parallel 
> with the resistor connected to ground.  The voltage will at the motor 
> will be approximately 0.0012 volts.  The motor will not run.
>  
> Larry Coen
> N136LC
Laurence is correct.  10k resistance is way too high when working with a 
high-current device like your trim motor.  You could experiment with a 
rectifier or two inline with the motor load. Each rectifier you use 
would provide about .7v of drop.  Make sure to use a rectifier that is 
rated well above the max current the motor will draw.

-- 
Dave Philipsen
Velocity STD FG
N83DP