Automatic current limiting has been on ongoing challenge for many of us running HOH / HHO cells and these guys might just have an economical solution:

Supplier: http://dtsal.com/products.html

Rated documentation:

• http://www.pas-sv.com/ebay_doc/CC_HHO.pdf
• http://www.pas-sv.com/ebay_doc/PWMHHO.pdf
• http://www.pas-sv.com/ebay_doc/EFIE_digital_2009.pdf

Through the Association of Climate Technology Solution Association a trialing program has been initiated, if you would like to participate in this click here

If you test one of these devices, please share your experiences with us by leaving a comment.