Research Scientist and Author, Dr. Hulda Clark invented a simple positive offset square wave frequency generator powered by a 9-volt battery and called it a Zapper. She wrote many books about zapping parasites which she believed was beneficial to boosting the immune system. Zapping is considered experimental, which means that the science has not been evaluated by the FDA. In this course, you will learn how to build a Hulda Clark Zapper in various ways: a standard 400-point breadboard, the smaller 170-point breadboard, and for those with more advanced electronics skills using Dr. Clark’s very own schematic.