Re: How to provide power to a spinning circuit ?

From: Spehro Pefhany (speffSNIP_at_interlogDOTyou.knowwhat)
Date: 07/22/04 

Date: Thu, 22 Jul 2004 03:24:20 GMT

On Wed, 21 Jul 2004 20:37:10 GMT, the renowned "Rodo"
<dsp1024@yahoo.com> wrote:

>Hi all...
>
>I need to make a circuit that needs to spin on the shaft of a small dc
>brushless motor. I thought I could use a permanent magnet mounted on the
>base of the shaft of the motor (not moving) and some coils that will be
>spinning on the pcb. I don't know if this will work or provide enough power
>(need 5mA) to the spinning pcb . Any better ways ?

One way might be to modify the motor so you can draw power from the
rotor windings.

Best regards,
Spehro Pefhany 

-- 
"it's the network..."                          "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

Relevant Pages

  • Re: equations for inertial simulator
    ... Imagine a horizontal shaft on ball bearings, with an unbalanced mass ... motor attached to an optical encoder. ... Switched to begin the rocking are at the start of bow stretching. ...
    (sci.physics)
  • Re: Salvaged Spa Pumps
    ... is just worn out (motor shaft wobbles when I turn the rotor by hand). ... I found the slot in the rear of the shaft behind the cap, ... The pumps are fine, but the motor front bearings seem to be ... >>bearings, but I can cut up the pumps and salvage the motors that way. ...
    (rec.crafts.metalworking)
  • Re: Economics of transmission
    ... You might have a motor already, and considered belts to be a good method to reduce the speed, sometimes they are not. ... or a separate gear reduction box could be a better solution. ... Worm gear reduction results in an output shaft that is 90 degrees from the input shaft, and parallel gear reduction results in an output shaft 180 degrees from the input shaft. ...
    (rec.crafts.metalworking)
  • Re: How to provide power to a spinning circuit ?
    ... >> brushless motor. ... >> base of the shaft of the motor and some coils that will be ... How much current does your PCB circuit require, ...
    (comp.arch.embedded)
  • Re: A4 Rear Wash/Wipe faulty
    ... removed the wiper blade the motor doesn't seem to function. ... pipe that is fitted into the shaft that rotates and moves the wiper arm. ...
    (uk.rec.cars.maintenance)