Second Alternator +ve Cable and Sterling Charger?

[demonboy]

OK, ran the house batteries down a little. Turned on unit and the green boost LED continues to flash. A nominal charge is being put back in both the house and starter. No sign of it boosting either.

 

[pvb]

OK, ran the house batteries down a little. Turned on unit and the green boost LED continues to flash. A nominal charge is being put back in both the house and starter. No sign of it boosting either.

So maybe the Sterling unit is faulty.

 

[rustybarge]

Your new alternator has a built in rectifier circuit which converts the ac current to dc, the old alternators don't. Check the output from our new alt. with a dc multimeter.

So your feeding dc from your new alt. into another a second separate rectifier circuit, that's why it won't work.........aaha!

 

[pvb]

Your new alternator has a built in rectifier circuit which converts the ac current to dc, the old alternators don't. Check the output from our new alt. with a dc multimeter.

So your feeding dc from your new alt. into another a second separate rectifier circuit, that's why it won't work.........aaha!

Where on earth did you get that from?

 

[rustybarge]

Where on earth did you get that from?

The new 90 amp. Lucas alt. that the op has fitted has a built In Rectifier circuit, simples! The old ones don't. The old wiring included a separate rectifier and exciter for the field windings...... But now there's two in series, that's why it works with the old alternators, but not the new one..........easy peasy.

 

[pvb]

The new 90 amp. Lucas alt. that the op has fitted has a built In Rectifier circuit, simples! The old ones don't. The old wiring included a separate rectifier and exciter for the field windings...... But now there's two in series, that's why it works with the old alternators, but not the new one..........easy peasy.

Sorry, that's rubbish. The old alternators were only set up for an external regulator, not external rectifiers.

 

[rustybarge]

Sorry, that's rubbish. The old alternators were only set up for an external regulator, not external rectifiers.

Here's an block wiring diagram from the mid 90's.

View attachment 28673

You will notice that in this easy to read wiring diagram, both the diodes and voltage regulator are contained inside the alternator.

The voltage regulator is the transistor in the top left hand corner of the alternator 'box', there are nine diodes, three in parallel for exciting field winding ( center), and six for the voltage output to battery etc.

 

[pvb]

Here's an block wiring diagram from the mid 90's.

View attachment 28673

You will notice that in this easy to read wiring diagram, both the diodes and voltage regulator are contained inside the alternator.

The voltage regulator is the transistor in the top left hand corner of the alternator 'box', there are nine diodes, three in parallel for the exiting field winding ( center), and six for the voltage output to battery etc.

OK, I get it, you're a troll.