100% positive offset

In addition to Hulda Clark being very adamant about only using 100% positive offset for a zapper, it looks like Dr. Richard Loyd, Ph.D is also recommending 100% positive offset for "pad-type Rife machines". It may be best to have all zappers designed at 100% positive offset. I was also thinking there may be a way to design and market a device that would be an add-on device to any existing Bob Beck zapper that would cause the signal to be 100% positive offset DC vs AC. This would give people an option to experiment with other methods. Considering the existing number of Beck zappers out there, there should be a good market for such a device. John Crane said the 3.9 hertz (and 4 hertz) was a good healing and regeneration frequency also. One argument between Clark and Beck groups is the issue of 100% positive offset (which I am now convinced is the better method), but why not have both capabilities by offering an add-on device that could convert the AC Beck design to a DC 100% positive offset Clark design, without altering the original Beck zapper? An add on device would not change any existing Beck zapper & other both methods in one device..
It should be super simple using a plain full wave bridge rectifier but electronics are not my thing.
Actually just ordered one and will test it and check the result on the scope.