Electrical therapy appts. for external and internal stimulation - generates two effective low frequencies with resultant beat frequency

摘要

This electrical stimulation appts. generates two different low frequency electric currents, both of which are themselves clinically effective and which, moreover, result in a third beat frequency current for in-depth therapy. Two generators (2,3) produce low frequency a.c.- or chopped d.c.- currents which are applied to the patient via two pairs of electrodes (7,9,8,10). The first frequency is about 100 hz, and the second is 0-5 Hz with slow-rising amplitude. A third beat frequency current is consequently produced at greater depth (11).PS.