Re: Electrical Insanity with '87 CBR600

.. wrote:

On Sep 9, 10:10 am, Puddin' Man <puddingDOT...@xxxxxxxxx> wrote:

On Sun, 7 Sep 2008 15:19:01 -0700 (PDT), "." <Rhiann...@xxxxxxxxx> wrote:
<snip>
And it's OK they should have a material failure rate. Last about as
long as 2-3 good batteries. Eh?


I have never had a pulser coil failure on any vehicle that I have ever
owned. I did have two automobile distributor mounted ignition modules
*gradually* stop working, but I suspect the problem was environmental,
since both vehicles had
cooling system problems that released hot water vapor under the hood.


If I have it correctly, even the Hall effect sensors you<?> mentioned are now considered "old tech." Not that they didn't work, just that a lot of new designs are transconductance amplifier. If I have it correctly, typically they will just have a coil around a magnet mounted stationary with a steel/iron rotating part. That way you don't need 8 magnets or to spin the magnet(s) at 10,000 RPMs.

What happens is when rotating plate puts a hunk of itself near the pick up, it disturbs the magnetic field which produces a voltage change in the pickup coil. Transconductance => voltage to current so the loads on the magnetic pickup/coil are minimal. Older designs, be they magneto or transistorized were amps to amps to high voltage. As Forest would say, "Just one less thing to worry about."

Rick
.

Relevant Pages

  • Re: Does an electromagnet lag its input?
    ... the pull of the magnet will lag the input voltage by ... Those also contribute to the magnetic force, but they are not in phase with the coil current. ...
    (sci.electronics.basics)
  • Re: TECH: Strange Shadow magnet problem
    ... the voltage is around 51V when the coil is inactive. ... put the ball on the magnet. ...
    (rec.games.pinball)
  • Re: OT Question for Iggy
    ... superconducting magnet with a homogenous cylindrical volume of about 2" ... It's the magnet for a Fourier transform ... For whatever reason Oxford favored small diameter wire and lots of turns, ... which has the effect of making the inductance of the coil very large. ...
    (rec.crafts.metalworking)
  • Re: Rollergames magnet -- SOLUTION!
    ... The pre-driver transistor on the sys11C ... you'd send this straight to a coil. ... So you don't have to have a 'great' connection ... and immediately jumps over to the hot side of the magnet ...
    (rec.games.pinball)
  • Re: what motion? what velocity?
    ... Suppose that the coil was turned ... | external to the larger magnet or internal to the smaller magnet. ... I can't say that this won't demagnetize the magnets. ... reason I believe the construction will NOT induce electric potential. ...
    (sci.physics.electromag)
Loading