I've built this power on delay 555 circuit which works just fine.
However what i need is a timed power on delay.
That is, after switch is pressed there is a 5 sec delay,
then relay latches for 5 seconds then deactivates, ready for another switch press.
I tried using a 10 sec 555 timer before the "power on delay 555" circuit,
that is: pin 3 of the 555 timer will provide vcc to pin 8 of the "power on delay 555". seems crude i know, novice.
For some reason this cancels the timing circuit in the "power on delay 555" circuit,
load just stays on.
Any ideas, would be appreciated.
Regards,
Richard
However what i need is a timed power on delay.
That is, after switch is pressed there is a 5 sec delay,
then relay latches for 5 seconds then deactivates, ready for another switch press.
I tried using a 10 sec 555 timer before the "power on delay 555" circuit,
that is: pin 3 of the 555 timer will provide vcc to pin 8 of the "power on delay 555". seems crude i know, novice.
For some reason this cancels the timing circuit in the "power on delay 555" circuit,
load just stays on.
Any ideas, would be appreciated.
Regards,
Richard