Relay connection

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hi,
You could have blown the 2N2222.
Disconnect R5 from the 4011 output, that goes to the transistor Base, connect the free end of R5 to 0V [ so thats the Base to 0V via R5]
The relay should not energise, if it does, the 2N2222 could be shorted or you have wiring error on the relay coil connections.

Lets know what see.
 
Hi there, i will give it a try.but i see u have mensioned 4011,but your circuit diagram mensions 4024...is there maybe a problem with using 4024?
 
Christy said:
Hi there, i will give it a try.but i see u have mensioned 4011,but your circuit diagram mensions 4024...is there maybe a problem with using 4024?
Click to expand...

Sorry about that a typo its CD4093.....the quad NAND gate.
 
220uF...They one minute time interval I wanted is working,i put a LED on the output pin of the 555 to see it.
 
Christy said:
220uF...They one minute time interval I wanted is working,i put a LED on the output pin of the 555 to see it.
Click to expand...

hi,
I asked just in case you had used a very low value that would make the output 'appear' to be ON all the time.
 
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