FIELD: textile industry. SUBSTANCE: device for control of thread condition on textile machines has body, cover, board, rods, indicator 6, thread channel, light source 8, photodetector 9, amplifier 10, rectifier 11, low-pass filter 12, threshold element 13, memory element 14, control unit 15 with button 16 for machine starting, output switch 17. Memory element has thyristor, supply circuits, transistor, stabilizer diode and resistors. Output switch 17 has transistor, stabilizer diode and resistors. Capacitor, transistor and diode are included in rectifier 11. Indicator 6 consists of light-emitting diode and resistor. EFFECT: higher efficiency. 2 cl, 5 dwg
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