Re: Simple turbo pump controller

ggombert · Post by **ggombert** » Wed Jan 12, 2011 2:56 pm

Hi,
The vendor on EBAY is out of stock on the TPH-055 turbo pumps it seems. He is now selling the LEYBOLD TURBOVAC 50 85401. Is the homebrew controller described here capable of driving this pump as well (or are modifications to it needed?) The Ebay URL for this new pump is:

http://cgi.ebay.com/LEYBOLD-TURBOVAC-50 ... 3cb3b7ad0f

Thanks in advance!
Glenn

John Futter · Post by **John Futter** » Wed Jan 12, 2011 3:03 pm

Glen you oviously haven't read through all of the posts on the simple turbo controller

I have put up a design to drive the leybolds on another forum it is refernced in the simple controller post.
the leybolds are three phase drive not two phase like the the other pumps.
My controller is suitable for driving the TMP50, TMP150, TMP300 series pumps all that changes is the transformer specification lower volts but more amps for the bigger turbos

Alexi Hammond · Post by **Alexi Hammond** » Wed Jan 12, 2011 10:04 pm

Hi Glenn,

There is new batch of TPH-055 on eBay - Item number: 370474651538.

The homebrew controller will not work with LEYBOLD TURBOVAC 50 85401.

Alex

ggombert · Post by **ggombert** » Fri Jan 14, 2011 12:18 pm

Hi Alex,
Thanks for the tip!

I just ordered one yesterday.

Best,
Glenn

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