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The circuit John posted will work as it does provide bootstrap voltage to
the alternator. However, if the bulb burns out, it will no longer do that.
This may be OK for a automobile, but I would not want to have it in my
aircraft. Here is a better ( in my opinion) circuit.
With the alternator not turning the diode will conduct and current will flow
close the relay contacts (get a relay that has a NO normally opened
contact - meaning it is open when no current is flowing) and current will
also be provided for the bulb. When the alternator starts and the diode is
"back biased" it will stop conducting, the relay will open and the light
will go out.
Ed
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message ----- From: "John Slade" <sladerj@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, August 27, 2004 10:28 PM
Subject: [FlyRotary] Re: alternator connections
Here's the wiring diagram someone sent me, Paul.
I tried it with an LED and a diode and couldn't get the light to go out,
even when charging.
Regards,
John
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