majdi jaber
New Member
My circuit it's a counter , contain tow counters and the output of this counters connect with ( IC) comparator (74682) and the output of this comparator connect with transistor(NPN) (3904) , the collector of transistor connect with relay , contact of relay connect with contactor, contact of contactor connect between 3- phase and motor.
How to action:
1- If I need any number from 1 to 9 in 7- segment (1) I appoint this number from button S1 .
2- press in button (start) the motor rotate , any revolution the sensor exit signal to clock 2 .
3- If the two number in 7- segment 1 and 7- segment 2 equal the (IC 74682) exit signal to (NAND ) gate and exit signal from Q' to pin number (3) in counter 2 , this counter rest .
I built this circuit , If I work this circuit without contactor and motor , a circuit work good without error , but I found problem , this problem :
If I connect a contactor and motor the point number in 7-segment (1) change alone.
What I can make to removal this error.
Note: If you found mistake in grammar I hope excuse me because the English language not my mother language .
Thank you.
Image number 1 is a bluck diagram
Image number 2 is a circuit
How to action:
1- If I need any number from 1 to 9 in 7- segment (1) I appoint this number from button S1 .
2- press in button (start) the motor rotate , any revolution the sensor exit signal to clock 2 .
3- If the two number in 7- segment 1 and 7- segment 2 equal the (IC 74682) exit signal to (NAND ) gate and exit signal from Q' to pin number (3) in counter 2 , this counter rest .
I built this circuit , If I work this circuit without contactor and motor , a circuit work good without error , but I found problem , this problem :
If I connect a contactor and motor the point number in 7-segment (1) change alone.
What I can make to removal this error.
Note: If you found mistake in grammar I hope excuse me because the English language not my mother language .
Thank you.
Image number 1 is a bluck diagram
**broken link removed**
Image number 2 is a circuit
**broken link removed**