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VIKRANT VIJAY MALODE

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  1. This is my circuit for the mini project. I had implemented this circuit on breadboard and it worked.Now I have mounted this circuit on PCB and it is not working as desired. The problem is that RL1 IS NOT WORKING and RL2 IS WORKING WELL AS DESIRED. For sake of demonstration in my college I am using 6V DC motor as washing machine motor. So I am using 6V DC power supply instead of ac one. When I connect gnd probe of multimeter to gnd terminal of d.c power supply and red probe to emitter of TI it gives the reading as 5.8V When I connect gnd probe of multimeter to gnd terminal of d.c power supply and red probe to base of TI it gives the reading as 5.65V When I connect gnd probe of multimeter to gnd terminal of d.c power supply and red probe to base and the emmiter both of T1 the relay starts chattering The collector of T1 is showing 0V Also if I connet the 6V supply directly to coil terminals (with diode in parallel on PCB) of relay RL1 the D.C power supply which is showing 6V before connection shows 1.1V I have taken the continuity test of the PCB but none of the connections are shorted Also IC1 (555) and the NAND GATE output are as desired. This problem is occouring without connecting the motor to the circuit I am not able to figure out whats wrong with the circuit I have replaced T1 and RL1 with new one but the problem is same Please help me. cir-5-washing.pdf datasheet_sk100.pdf datasheet_cd_4011.pdf
  2. Thanks for your reply. But can you show me relay connection using DPDT relay
  3. I am working on this circuit as part of mini project for this semester.I have tested this circuit on breadboard, and its working.Now the problem is I want to use a D.C MOTOR instead of a.c washing machine motor in the circuit for the demonstration purpose in my college. Is this possible with the same kind of output? If yes please tell me the RELAY CONNECTIONS. If no please suggest me another alternative for a.c washing machine motor. cir-5-washing.pdf
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