| Maximum amplitude of positive part of output impulse | ||||
| Maximum amplitude of negative part of output impulse: | ||||
 no load condition | ||||
| under load (20 kOhm resistance and 2200 pF condenser connected in parallel) | ||||
| Maximum duration of positive part of output impulse | ||||
| Base frequencies of output impulses: | ||||
| low frequency | ||||
| medium frequency | ||||
| high frequency | ||||
| Deviation of variable output frequency from mean level during operation in the variable frequency mode | ||||
| Period of frequency changes during operation in the variable frequency mode | ||||
| Time required to change output intensity from minimum to maximum level | ||||
| Interval therapy: | ||||
| Treatment | ||||
| Pause | ||||
| Time before apparatus automatically switches itself off | ||||
| Battery voltage | ||||
| Voltage at which battery discharge alarm is activated | ||||
| Average time of continuous operation between battery charging | ||||
| Size of apparatus without packing, not more than | ||||
| Weight of apparatus without packing, not more than |
The apparatus is powered by a Nickel cadmium battery, type Varta 5022, TR7/8, V7/8R (110mAh, 9V) or type "NIKA" (100mAh, 9V).
The form of the output electrical impulses is shown in fig.1:
 |
Tv - period of output electrical impulse variations (frequency is equal to 1/Tv);
tp - length of positive part of impulse (defines intensity of treatment);
Um+ - amplitude of positive part of impulse;
Um- - amplitude of negative part of impulse;
t - time-axis.
Measurements are taken at the inner electrode relative to the outer.
Changes in the output impulse frequency during operation in the variable frequency mode are shown in fig. 2:
tp - length of positive part of impulse (defines intensity of treatment);
Um+ - amplitude of positive part of impulse;
Um- - amplitude of negative part of impulse;
t - time-axis.
Measurements are taken at the inner electrode relative to the outer.
 |
F - output electrical impulse frequency;
Fmax - maximum output electrical impulse frequency;
Fav - mean (average) output electrical impulse frequency;
Fmin - minimum output electrical impulse frequency;
T - frequency change period;
t - time-axis.
Maximum deviation (in percent) from the mean value is determined by the expression: (Fmax - Fav) x 100 / Fav.
Fmax - maximum output electrical impulse frequency;
Fav - mean (average) output electrical impulse frequency;
Fmin - minimum output electrical impulse frequency;
T - frequency change period;
t - time-axis.
Maximum deviation (in percent) from the mean value is determined by the expression: (Fmax - Fav) x 100 / Fav.