B&S Dual Circuit Stator LED Question - Snowblower Forum : Snow Blower Forums
 
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post #1 of 3 Old 11-22-2015, 09:13 AM Thread Starter
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B&S Dual Circuit Stator LED Question

Hello,
Ive followed the LED thread for quite awhile. I too am upgrading my machine with LED lighting... I initially initially believed that I could simply convert my 1971 B&S 7hp engine to a dual circuit stator and utilize the DC lead for powering the LEDs. I intend to reserve the AC wire for additional items down the road...
As I near completion, Im now unsure if the "DC" lead is actually clean enough to use with LEDs, or if I should add an additional rectification? I do intend to add a capacitor to balance it.
Another question is, should I be adding a voltage regulator to protect the LEDs? or would the LEDs be capable of handling unregulated voltage?

I have not tested the machine's actual power output with a multimeter yet, because she is still apart... still waiting for a few parts to come in. I was hoping someone has the answers, so I can avoid a potentially expensive experimentation process.

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post #2 of 3 Old 12-03-2015, 01:38 AM Thread Starter
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Anyone?

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post #3 of 3 Old 12-03-2015, 07:06 AM
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Hey Brother Al,

You'd have to see if the "DC" line is rectified using a single diode or a bridge rectifier.

If it's a single diode, you're only getting 1/2-wave rectification; 1/2 of the sine wave is being blocked.

Since you have it apart, I recommend removing it if possible and replacing the single diode with a bridge rectifier in addition to a smoothing capacitor.

If you already have a full-wave rectifier, than a large smoothing capacitor is all that's really required.

A voltage regulator isn't completely necessary if it's always "on". Adding a switch creates an entirely different monster since a no-load condition can create a relatively high voltage at the stator output that may smoke your LED lamp when you toggle the switch.


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