Re: Regulator, how does it break?

Posted by Dw07u on Jun 01, 2012; 8:11am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Regulator-how-does-it-break-tp3865650p4022030.html

Thanks for pointing that out, I thought it must be something like that....

On May 31, 2012 9:30 PM, "LukeM [via Honda CB750'S]" <[hidden email]> wrote:

There are (if memory serves) 6 diodes in the rectifier circuit, one pair for each of the 3 phases of AC coming from the alternator.  Imagine a voltage level going from -20v to +20v.  The idea is to get all the peaks going the same way.  So, when it's at -20v, one diode is blocking the flow (by resisting the voltage) and the other diode is allowing it.  When it flips to +20v, the same thing happens with the diodes flipped.  This makes sure that the voltage from that winding through the rectifier goes only one way.

The regulator essentially works like a faucet, allowing the limit of voltage, and clamping down any excess. This is usually dissipated as heat, as the clamping diodes resist the extra voltage.

Electronics 101 lesson concluded.
Luke M

Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.

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