Electric stimulation therapy instrument - generates AC with asymmetrical waveform to reduce risk of electrode burns

摘要

This electric stimulation therapy instrument for strengthening atrophied muscle etc. eliminates electrode burns by virtue of the special asymmetric wave form of the a.c. generated. The positive and negative wave envelopes enclose equal areas and the positive amplitude is equal to twice the negative one. Pulse bursts are variable in duration. Wave forms are produced from triangular oscillations by means of pulse shaping circuitry.