ELECTRIC SPARK DISBALANCE MARKER AND DISCHARGE TIME FORMER Russian patent published in 1997 - IPC

FIELD: balancing machines for electric spark disbalance marking of articles. SUBSTANCE: electric spark disbalance marker for balancing machine has frame means for placement of part to be balanced, electrode discharger, energy accumulating capacitor with oscillations, signal former and electron key. Electrode discharger is positioned with air gap relative to balanced part. Sensor of frame oscillations is manufactured in the form of semiconductor vibration converter and is connected to frequency-selective amplifier. Signal former incorporates former of time of discharge which input is connected to frequency- selective amplifier and output - to electron key. The latter is fabricated in the form of matching transistor stage with auxiliary power supply source, amplifying transistor stage, which input is connected to output of matching stage and to output of amplifying stage of power transistor stage switching stage and to output of amplifying stage of power transistor stage switching negative electrode of discharger. Positive electrode of energy-accumulating capacitor is connected to collector of balanced part via controlled resistor. Former of time of discharge has input meant for connection to source of master signal, comparator and delay network connected to one of inputs of the latter. Half-wave rectifier is connected with input to input of former and with output - to second input of comparator. Root-mean-square meter is connected with input to input of former and with output - to input of delay network. Input of differentiating network is connected to output of comparator and its output is output of former. EFFECT: enhanced operational characteristics, increased productivity. 2 cl, 4 dwg