A Few Relatively Simple "TENS" Circuits

Created in 2002.
Revised in Mar 2006

I initially designed these circuits for a friend who had muscle problems and while he says they did work well for him,
I "DO NOT" RECOMMEND THE USE OF THESE DEVICES BY ANYONE FOR ANY REASON.
I ACCEPT NO RESPONSIBILITY OR LIABILITY FROM THERE ASSEMBLY OR USE IN ANYWAY.

These circuit are to be used at your own risk And I do not imply any medical benefit can be obtained from their use.

GET A DOCTORS ADVICE, BEFORE CONSIDERING USING THESE DEVICES!


Circuits 1 and 2

"T1" in Circuits "1 & 2" is a small audio transformer with the 8 ohm impedance winding
connected to the Fet and the larger winding connected to the probe and ground.

The Turns ratio of the transformer determines voltage output.

A small 6 or 12 volt power transformer can also be used.

Optional Changes:

A transistor such as a 2N3055 can be substituted for the "FET" that is used in Circuits "1 & 2".

The Base connects to the Gate, the Collector to the Drain, and the Emitter to the Source.

This will result in a lower power output, but it still works.

Circuits 1 and 2.


Circuit "3"

Is a very low powered, low voltage version, using a choke. No transformer.
It will light up an NE-2 bulb connected to the output.

For Informational purposes only:
Low powered versions of this type of device are used by some Accupuncturists
and instead of pads, the signal is applied to the needles, giving a very localized effect.

Various timing capacitors and resistors can be changed for different effects.

Circuit 3, This Low Voltage C-mos circuit.


Chemelec

*Copyright © 2002*