Abstract: A transcutaneous electric nerve stimulator having a plurality of treatment modes and producing a low-frequency pulse of a frequency corresponding to a selected treatment mode is provided with a plurality of indicators in association with the respective treatment modes such that one of the indicators corresponding to the selected treatment mode is caused to blink in synchronism with the produced low-frequency pulse.

Abstract: In a transcutaneous electric nerve stimulator for producing in a predetermined sequence of different types of waveforms (in which the frequency varies, the signal is successively and/or intermittently created, etc.), when the user depresses a predetermined switch while a desired waveform is being outputted, a low-frequency signal of the waveform is thereafter continuously produced.In a transcutaneous electric nerve stimulator capable of selectively producing low-frequency signals of at least two different kinds, a kind of output signals at a termination of a treatment is stored in a memory such that a low-frequency signal of the stored kind is produced when the stimulator is started for a subsequent treatment.

Abstract: In a transcutaneous electric nerve stimulater in which a frequency of an output pulse varies with a lapse of time, a pulse width of the output pulse is increased when the frequency becomes to be smaller and is reduced when the frequency becomes to be greater. Furthermore, a pulse amplitude of the output pulse is increased when the frequency becomes to be smaller and is minimized when the frequency becomes to be greater.