The unipole slab electron weighs system circuit diagram composed of ZEM series

Published:2011/5/11 4:19:00 Author:Ecco | Keyword: unipole slab , electron weighs system , ZEM series | From:SeekIC

The unipole slab electronic weigh system circuit diagram composed of ZEM207 seriesis shown as below. The circuit includes the analog switch MC4066, double OPAMP TL062, a double inputs four and MC4011 in the non- portal, a seven Darlington driver UN2003(may also replace with the MC1413), a 3 wires/8 wires translator 74 HC138, a 2 Kb serial E2PROM storaging machine 24C02, three ports voltage regulations 7809, 7805. The system goes together with 7 LED displays and 4 × 4 keyboards, and display unit can select gram(g), kilo gram(kg) or ton(t). There are 8 light-emitted diode A~H, mean LW(null potential) and PZ(tare), ZL(place null) and DJ(price per unit), JE(figure ) and LC(accumulate number of times), LJ(accumulate) and LZ(accumulate weight) respectively. TXD in the chart means serial output, RXD means serial input, the BT represents low voltage indication, SW is mark of switch. U+ means connecting +9 V power supply, UCC means connecting +5 V power supply. U+L means the output voltage after returned from 9V source.



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