Electronic counter with automatic counting interface circuit a

Electronic calculator with automatic counting of the interface circuit shown in Figure. Figure (a) stroke switch so via optocoupler B control; Fig. (B) the use of reed KR and p

ulse control signal; FIG. (C) the use of optocouplers B and pulse signal control, LED VL to monitor counting pulse operation; Fig. (d) the use of photocell LD and relay KA control.

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