> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
Behalf
> Of YES NOPE9
> Sent: 15 December 2010 17:58
> To: Microcontroller discussion list - Public.
> Subject: [EE] Replacing a failed small engine voltage regulator
>=20
> I have a CASE trencher (CT ) and the regulator
> failed.
> The CT has a 12V battery to start the engine.
> There are two leads coming from the flywheel.
> I believe they are attached to a coil that is
> activated by a passing permanent magnet. I have
> connected a full wave diode bridge to the leads and
> put a cap across it.  I measure 33VDC ( no load ).

I forgot to add, check that one side of the coil is not grounded at the
engine.  I have seen scooter engines that do this, even though there was
also a ground wire coming from the generator itself.

There is a schematic of the regulator used in numerous small scooters
(almost everything with the Honda GY6 engine and the Chinese and
Taiwanese clones) at
http://scootdawg.proboards.com/index.cgi?board=3Ddiscussion&action=3Ddispla=
y
&thread=3D31652


Regards

Mike

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