[SOLVED] does uln2003 gives a continous pulse out.

[kulkarnia90]

if a continous pulse of logic 1 is given to the input of uln2003 will there be a continous pulse???

 

[alexan_e]

the output is sinking current as long as the input is high (logic 1), if input becomes 0 then the output will stop sinking current.

 

[kulkarnia90]

sir i have doubt can u clear it???
i have connected a 6v relay to uln2003 this relay acts as a switch for a 12v electromagnet so now if i give a continous high logic
at th input pin of uln2003 the relay jst starts and gets off. it does not stay at logic 1.

 

[alexan_e]

This is not uln2003 fault, the connection of the relay is like below?

 

[kulkarnia90]

the connections are same sir is there a trouble in the output voltage??

---------- Post added at 22:30 ---------- Previous post was at 22:25 ----------



check this ckt out....

 

[alexan_e]

I don't see a problem in the ULN2003 connection.

 

[kulkarnia90]

thanx sir....

 

[alexan_e]

Re: SystemVerilog Training in Hyderabad

your schematic is not very clear but I think you have connected pin 9 of ULN to Vcc?
If so it is wrong, you have to connect it to the same supply as the relay (I think 12v in this case)