Electrical stimulation muscle treatment equipment - is portable and is based on single Hartley oscillator with four pole three position switch

摘要

The electrical equipment is intended to be used in the treatment of uscular disorders. The equipment is particularly applicable to exercising muscles which as a result of nerve damage are not being used normally and as a consequence may become atrophied. Both stimulation and exercising sources are based on a common oscillator, the output of which may be rectified to provide pulses of a single polarity. The apparatus is portable and includes control of impulse frequency and level. Control of function is via a four pole three position switch controlling the operation of a basic 20KHz Hartley oscillator (11) using a single NPN transistor.