delayed relay

i desperately need help on learning how to make a delayed relay

i need to be able to push my momentary button in (jus a quick push) and it only acticvate my relays that i already have working..i need to be able to hold that button for 2 or 3 secs then it activate another realy wile still activating the originals

my point is i need to push a putton and ofter one 2or 3 seconds of holding it it needs to activate a realy....my push button is negative pulse im working with 12 volts


SOME ONE HELP ME PLEASE

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i like leds!!!!

If I understand this question you want a 3 sec delay with a latching effect...yes? No?

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

i dnt understand what you mean by latching

i just need a cicuit to delay my button

i need to be able to press the button quickly and activate only one thing then i need to be able to hold it for three seconds and still activate the original thing wile after then three seconds it will activate another relay

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i like leds!!!!

By latching, do you need the second relay to stay energized even if you release the button after the 3 seconds, or is the relay supposed to open up again after you let go.

no it cant stay latched it has to open again it has to be a from a momentary to a delay momentary

hopeing that makes sence..


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i like leds!!!!

You can do it easily enough with some solid state components, dut that depends whether you're willing to work with them. Lot of guys shy away from them though, preferring just working with relays and passive components. Is the relay you're controlling with this going to be something that's controlling a large current?
If so, you don't want to do with with passive components, because that'll result in the relay contacts switching slowly, which is generally bad because it can cause the contacts to overheat and burn up.

its only 12volts and hardly no amps
n i dnt mind useing anything long as i have a wire diagram or something to follow

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i like leds!!!!

If it's low current and "hardly no amps" why is a relay needed?
If I knew WTH you were trying to achieve, I'd run with dualsport's suggestion.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Yeah, if you don't need any drive current capabilty, you could probably skip the relay.

If a slow rising output signal is okay, it would simplify things further- that's to say you don't need the output signal to change to 12V instantly, and it can just drift up slowly to 12V. Slowly being relative of course.

Otherwise using something with hysteresis such as a Schottky driver would square off the edges for a fast transition, to get it to pop up to 12V and down quickly..

So what are you doing with this?

You could probably achieve this with 1 528t, set to break then make but I still don't understand the sequence or the poster's misuse of English. latching is something that you activate and it holds like a light switch.
Timed is similar but for a predetermined interval and pulse is momentary.
Perhaps AGAIN if you explained what you were trying to achieve we could help.


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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

ok i have a start stop button out of a nissan altima..the button is momentary switch (simple push button) i have figured relays to turn on and off with a latching affect to where if upi push the button once it turns the relays on and they stay on now if u press the button one more time it turns the relays back off...
i need it to where i push that button and relays turn on as they do now..to turn on ignition one (fuel pump etc) then as im holding that button down for three seconds (fuel pump run time) then another relay,gate,circut, watever you wish to call it needs to open (starter).. when i release this button the ignition one needs to stay on but the starter needs to go off..

then the vechicle would be running as normal.when i push that start stop button again it also has to be delayed to where if i pudoodie less then 3 secs the starter will not engage

i will post a link of my you tube video so you can see what i already have working

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i like leds!!!!

https://www.you tube.com/watch?v=UlqJL4on0JA

ok thats the link
as u can see the switches turn power to button never mind when i push blue button n it says acc thats un important for my topic..when i push button in it shows 12+volts meaning ignition one on..press again ignition of 0.00volts
it has to be if i hold that button it holds ignition one on then after 3 seconds activates astarter to allow fuel pump time and all other car relays to energize..but when i go to turn car off the button cannot hit starter again or it will destroy the starter and i dont need that

i hopen im makeing it clear its the best i can describe


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i like leds!!!!

Not famiiar with the switch you're using in the video, so I don't know exactly what you've got going on in there, but I assume it's a momentary push button that you're controlling a latching relay with.

Since you say you don't need any drive current from the output, you can use a circuit like this to delay the onset of the trigger from your push button.

This assumes your signal sits at 12V normally when you're not pushing it, and goes to ground when you do. 

When you push the button, there will be a delay time (controlled by the values you use for the resistor and capacitor), and then the output will go to 12V.  When you release and the input goes to 12V, the output should drop back to zero right away.

If you're driving a starter, then you'll obviously need to have an relay driver to be controlled by this output, and not run it directly, because there won't be enough current from the IC.

Note - If your button is only closing to ground but is just open circuit when it's not pushed, then the circuit will have to be modified, because it relies on an input of 12V to keep the output off.

Kevin Pearson makes these units, contact him.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Apologies KP, I meant Pierson.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.