Fusor Forums

Thanks for the post. That high starting current surge explains a few things.

The circuit I was using works overall, but I toasted several iterations of it before moving on to a micro-controller based solution with over-current protection.

I'll post details on that later if I can get it fully up to speed.

I can now confirm that Mouser part number 654-PT06A-12-8S-SR made by Amphenol fits the TPH-055 pump connector. Cost is $28.27


How is the PCB design coming along?

Dan Schultz

Haven't worked much on the PCB, but I have solved the current limiting problem.

The following buck-boost DC-DC converter is available on ebay and has current limiting. This will allow you to run the turbo pump on any voltage between 5 and 35v input while preventing the initial current during startup from climbing too high. I tested this with the controller without using a resistor and it started to spin up fine. The next revision of the PCB will include a connector to use this converter to drive the h-bridge

http://www.ebay.com/itm/LM2596-LM2577-A ... 256facce20

Andrew

Fellows

Can somebody provide me with the pinout of a TPH 050?
I don't know were the motor windings come out.

Thanks!

Roberto

You have to look really close at the connector, each pin has a letter next to it. The first post in the thread has the pin connections listed by letter.

Andrew

Thanks Andrew!

Roberto

Though it has been a long time, I'm dying to know... Any PCB designs coming along?

Ameen Aydan

The older pfeiffer TC-100 controllers are getting so cheap on ebay that I would not recommend building your own at this point.

I have searched eBay and noticed that these controllers are quite expensive. I’m going to try and make one of these, but I’m not sure how it’s gonna turn out. Maybe a few weeks. Do these controllers work with the TPH-100? TPU-50?

I'm glad to see this virtually lost circuit using common components has been pushed back to the fore. Really useful stuff.

Richard Hull

I am a newbie on the Fusor Forum so hopefully this is a relevant posting for this thread.

I have been given an Alcatel MDP 5010 turbo pump but I do not have a controller for it. This thread about controllers is quite old now and it appears that details about the simple controller posted earlier are no longer accessible.

The Alcatel MDP 5010 has, I believe a single phase motor with a single (not centre tapped) winding and a Hall effect sensor to provide phase timing to allow the pump to start and run.

Does anyone still have details of a suitable homebuilt controller? The full rotational speed of the pump is 27kRPM and the operating voltage is 40V. I understand that the original controller CFV10 also had current sensing to prevent the MDP running whilst overloaded.

I have the manual for the pump and controller which has the schematic, I could possibly recreate a controller from this but if a more simple method of achieving the same result exists then I would be very happy.

Thanks

Alan

Here is this thread with pictures ftom the WayBack Machine:

http://web.archive.org/web/201501032031 ... =10&t=4036

Thanks Alexi

That's perfect, thanks so much for helping with this. Hopefully I can finally get the pump to spin (with care).

Alan

Hello Alan,
As a new member, I think you missed this...

The Rules: #2
New members are required to introduce themselves in the "Please Introduce Yourself" forum prior to posting elsewhere on the site.

Please make that post.

Apologies Rex

The rules are clear.

I got a bit carried away with my posting regarding the controller, I have now completed an "Introduce Yourself" posting.

Alan