Controller circuit for Hilden Brandt motor needed..

[lwh]

Nice work.  Looks like it matches Jack's own level of quality.  Here's hoping it all works well together.

Les.

[yorkshireminer]

Dear Honk,
                  what a beautiful piece of work, I must congratulate you. I bet that old bugger in Ohio is making clucking sounds at this very moment. I am certain it is really appreciated and he will certainly put it to good use. I await with trepidation to see the results here on this thread.

Deep regards

Yorkshire Miner

[Honk]

Thank you all very much for the positive feedback. 

Today I managed to work some more on sorting out the last small issues.
I found a tiny booster bug that I corrected and also added a couple
of 100nF capacitors to improve the stability of the AC-DC converter.

Jack likes the look of the exterior and is really looking forward to test it.
Hopefully it will perform just as good as people hope and expect.

/Honk

[dingbat]

Honk,

Nice job.  I am progressing on an encoder based triggering circuit to feed the controller the trigger signals.  We have a 4000 count per revolution encoder that we are connecting to a microcontroller.  The microcontroller counts the pulses and generates trigger signals (3 phases) based upon the encoder position.  We will couple the encoder to the shaft of the motor in place of the motorcycle points.  We can adjust the phase and pulsewidth of the output signals dynamically.

This system should give us very close control of the timing.

I still haven't gotten down to visit Jack, but I hope to soon.

db

[Honk]

It's nice to have more solutions instead of just the points, which would work fine, but maybe
not as accurate as your encoder. I don't hope the encoder is more expensive than the points.
So far Jack and I have been working to let the points trigger the control signals to my controller.
This is an easy way for Jack, no motor modifications and it's easy for him to hook up the controller himself.

You must know that your cannot feed anything else to the controller except clean stable
signals for each valve. Your outputs must be an open collector circuit with no pullups.
Meaning that when one rotor is in start position you just need to pull down on the
output and when the rotor have moved to it's end position just release the pull down.
There must be no dips or other interuptions from your encoder while the rotor is in pull position.
Just one clean and stable pull down signal while the rotor is in pull mode.