Winding electronic counter 2

Published:2011/4/25 21:39:00 Author:Ecco | Keyword: Winding , electronic counter | From:SeekIC

The winding machine electronic counter described in the example uses LED digital display to show the wound coil turns, the use of maximum count rate is 9900 turns. The working principle The winding machine circuit is composed of the power circuit, infrared switch circuit, shaping / transformation circuit, reset circuit, divider circuit and the LED counter circuit, it is shown in Figure 8-85. Power circuit is composed of the power transformer T, rectifier bridge pile UR, filter capacitor C4 and the three-terminal voltage regulator integrated circuit ICl. Infrared switch circuit consists of infrared light-emitting diodes VL, infrared phototransistor V and resistors Rl and R2. Plastic / converter integrated circuit is composed of the time base circuit IC2 and resistor R3, capacitor Cl and C2. The reset circuit is composed of reset button SI, resistors R4, R5 and capacitor C3. Count divider circuit consists of integrated circuits IC5, 1C6, and override switch S2, S3. LED LED digital display is composed of the counter circuit A & B, resistor R6-Rl9 and counter / decoder integrated circuit IC3, 1C4.



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