DEVICE FOR INDICATING FLAW Russian patent published in 1994 - IPC

FIELD: flaw detection. SUBSTANCE: device has test bench 1, mechanism 2 for object movement, TV camera 3, synchronization generator 4, amplifier 5 having possibility for commutation of video signal polarity, three flip-flops 6, 7, 27, synchronization frequency divider 8, "start" button 9, reproduction interval setting unit 10, "stop" button 11, pulse generator 12, two AND gates 13, 14, video signal commutation unit 15, recording interval setting unit 16, storing cathode-ray tube 17, two registers 18, 19, unit 20 for generation of voltage for power supply of CRT, "clear" interval setting unit 21, "ready" interval setting unit 22, OR gate 23, band-pass filter 24, threshold unit 25, indicator 26, power amplifier 28, movement mechanism electric motor 29, memory unit 30 which performs subtraction during each second period, control unit 31. EFFECT: increased precision. 3 cl, 2 dwg