Does the circuit need to operate with the ignition switch off?I feel that it may be pertinent to say that the current in the "off" state should be very low in the entire circuit as it will be an application that is in a vehicle and battery drain would be an issue if the vehicle is not being used often.
Then use the CD4538 chip that @shortbus recommended. Draws micro-amps in the off state.I feel that it may be pertinent to say that the current in the "off" state should be very low in the entire circuit as it will be an application that is in a vehicle and battery drain would be an issue if the vehicle is not being used often.
iCircuit for iPad.Thank you very much!!! What software are you using?
If precision is not important - you could just charge a capacitor and let it discharge through a relay coil - some older motorcycle indicator relays are that simple.I've got an application where I want to take a 12v input signal to latch a 12v for just 10 seconds and then to stop and have the circuit open again until the input signal is received. I just need roughly 12v output. Really, input could be 11-15v and output can be a large range of voltage as well.
What would be the best way to go about this?
Thanks for any assistance, it is greatly appreciated.
iCircuit for windows.Any recommendations for PC/Mac based circuit design and PCB software. It's fine if it is paid, doesn't have to be free or web based.
You can charge the cap via a resistor that's too high to supply the relay coil on its own.How would you recommend activating the discharge of the cap?
I use Digikey.com and select 1st class US mail (if you are in the US). Shipping is about $3 on small lots of small pieces. About 6 or 8 if they can't fit every thing in an envelope.Interesting. I'll probably give the 555 timer circuit a shot and see how that goes.
Any recommendations on a large electronics component LOT that is out there. I've been searching around, but haven't found anything too great or that isn't way overpriced. Need to get a good base of components here so I'm not always ordering a few at a time, "nickel and diming" me to death.
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