Hi Geeks, Nerds, Technophiles,

Here is the link to Silicon Chips Magazine article that provides instructions (including complete circuit diagram) on how to build your own pocket TENS unit. We are actually using a highly modified version of this diagram in our FES project.

Features:

Battery powered
Adjustable voltage level
Adjustable pulse rate
Adjustable pulse width
Intermittent or continuous output


Unfortunately, access to the article is not free. Electronic copies of the issue are available for purchase on the Silicon Chips website.