I was wondering if anyone could tell me how to make a relay have a 7 second delay without using solid state components. I was told I could use a capacitor and resistor but cant find anything. Can anyone help??

Why no solid-state?
The timer can be isolated from the circuit with a relay and fused so it wont get damaged in a spike.

If you can give some more details on what your trying to do.

Cannon fuse

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Technology is great when it works,
and one big pain in the ass when it doesn't.
Detroit iron rules all the rest are just toys.

[This message has been edited by 84fiero123 (edited 07-26-2009).]

I am trying to have a relay get power 7 seconds after the door is opened on my car. I was gonna take power from the domelight and power a 800mah relay to power the circuit. I just want a 7 second delay between the time the dome light comes on and the relay gets power.

quote Originally posted by turboguy327: I was wondering if anyone could tell me how to make a relay have a 7 second delay without using solid state components. I was told I could use a capacitor and resistor but cant find anything. Can anyone help??

The mid to late Cads use an adjustable one for the delay in turning off the headlights. It is under the dash on the left side.
Used one to make a retained accessories for my Fiero.
I believe the relay has NO and NC contacts.

[This message has been edited by partfiero (edited 07-26-2009).]

Any idea on the year or model??

Oh--ok.

I was gonna say just make the fuse longer, but I see you are working on a car.

LMAO

Save some time and look up Grainger on the web. They have delay relays, but they are solid state.
The one I used could be set for minutes or seconds. I used an octal base and wired everything to that and all I had to do was plug the relay into the base. Makes service simple.

http://www.grainger.com/Grainger/items/4GY63

This part number may not work for your application due to coil voltage, yada yada but you get the idea. You have to specify what you need for your application.

And its no bigger than a fiero fuel pump relay. You may need a contractor to purchase this for you.



Spoon
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Two yeast spent their entire life "about 2 days" discussing what the purpose of life could be and not once did they even come close to the fact that they were making champagne. Quoted by: Unknown

[This message has been edited by Spoon (edited 07-26-2009).]

quote Originally posted by turboguy327: Any idea on the year or model??

Most models.
Just look at the light switch.
It will have a delay setting on the dial.

[This message has been edited by partfiero (edited 07-26-2009).]

I dont want solid state because I am not sure how to make everything to make it work. I am looking to make this circuit because of the expense. The cheapest I can find is like 70 bucks.

So any ideas on how I can make this work??

quote Originally posted by maryjane: Oh--ok. I was gonna say just make the fuse longer, but I see you are working on a car.

I was gonna say make the relay runners run slowly