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charlesdavis(at)iuncapped
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 Posted: Wed Jan 27, 2021 7:57 am Post subject: Rectifier/Regulator |
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greetings, all
Does anyone recognize this rectifier/regulator ?
It was given to me for my project (Was in a Rotax-powered plane which
was destroyed, and I am busy installing a 912)
Only 2 of the three yellow wires were connected - I assume they were
/are for a 3-phase alternator, whereas the rotax only has 2 wires from
the alternator coils ...
The 2 red and 2 green are terminated in a 2-pin male and a 2-pin female
molex-type connector - I assume they are +ve and -ve to the battery
the 2 white wires in the pic are a 20,000 uF cap, 25v
Can I test the functionality by supplying 9v, 50Hz from an isolation
transformer, and connect the red/green pairs to a gel 12v battery ?
There are no markings or numbers of any sort on the unit
What would be the simplest way to have a charging/not charging
indication - an idiot-light would be my preferance
Charles
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nuckolls.bob(at)aeroelect
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| Posted: Wed Jan 27, 2021 8:44 am Post subject: Rectifier/Regulator |
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At 09:56 AM 1/27/2021, you wrote:
| Quote: | greetings, all
Does anyone recognize this rectifier/regulator ?
It was given to me for my project (Was in a Rotax-powered plane which was destroyed, and I am busy installing a 912)
Only 2 of the three yellow wires were connected - I assume they were /are for a 3-phase alternator, whereas the rotax only has 2 wires from the alternator coils ...
The 2 red and 2 green are terminated in a 2-pin male and a 2-pin female molex-type connector - I assume they are +ve and -ve to the battery
the 2 white wires in the pic are a 20,000 uF cap, 25v
Can I test the functionality by supplying 9v, 50Hz from an isolation transformer, and connect the red/green pairs to a gel 12v battery ?
There are no markings or numbers of any sort on the unit
What would be the simplest way to have a charging/not charging indication - an idiot-light would be my preferance
Charles
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Low voltage warning light is the PRIMARY
function monitor in the simple electrical
system. Voltage above 13.5, alternator MUST
be working . . . light OFF. Voltage below
13.5; alternator is not working . . . light
flashing.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
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rparigoris
Joined: 24 Nov 2009
Posts: 797
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| Posted: Wed Jan 27, 2021 10:29 am Post subject: Re: Rectifier/Regulator |
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Hi Charles
It kinda looks like a Silent: https://www.silent-hektik.de/UL_R_912.htm
Sorry I don't know too much about the unit. You may be able to obtain what you need if you translate page? I believe Vans Aircraft now sells them for their RVs, perhaps you can see if they can help? On my 914 I'm using a B&C AVC1. AVC1 has low voltage warning, over voltage protection and adjustable set-point. You can also set the voltage that the low voltage warning comes on, I'm using LiFe so it really wants to be higher than that used for lead. Ron P.
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user9253
Joined: 28 Mar 2008
Posts: 1928
Location: Riley TWP Michigan
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| Posted: Wed Jan 27, 2021 10:49 am Post subject: Re: Rectifier/Regulator |
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Charles, is your alternator a single phase permanent magnet type? If so, buy a
new AM101406 regulator from eBay for $19 and free shipping. Mount it with
heat conductive paste and keep it cool with an air blast tube. That is what I
did and it has lasted 4 years so far. The wires in your picture look heat
damaged where they enter the case. Your old one can not be tested with 9
volts. A 16 volt transformer might work. But why bother when a new one is inexpensive?
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Joe Gores |
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user9253
Joined: 28 Mar 2008
Posts: 1928
Location: Riley TWP Michigan
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| Posted: Wed Jan 27, 2021 11:25 am Post subject: Re: Rectifier/Regulator |
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If you install an AM101406, connect as follows:
B+ goes to the main power bus through a 30 amp fuse.
The AC terminals connect to the dynamo.
Terminal "L" is for an indicator lamp.
IGW gets battery power through a switch labeled "Alternator".
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Joe Gores |
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