Hi all,
Been searching through the net and im a bit lost and could do with some pointers. Im trying to build a circuit that would have 5v power to run, a switch input +ve (either 3.3v, 5v or 12v) with an output of 5v@1amp. The output only turns on once the input turns off and stays running for 3 minutes.
It is to run a fan at 5v for 3 mins once the item has been switched off, for cooling purposes. From what ive read i should be able to use a 555 timer, im just unsure how to tigger/delay the output.
I guess a bit like a car fan on the radiator once the car got very warm, its runs on.
Any help would be appreciated!
Thanks,
James.
Been searching through the net and im a bit lost and could do with some pointers. Im trying to build a circuit that would have 5v power to run, a switch input +ve (either 3.3v, 5v or 12v) with an output of 5v@1amp. The output only turns on once the input turns off and stays running for 3 minutes.
It is to run a fan at 5v for 3 mins once the item has been switched off, for cooling purposes. From what ive read i should be able to use a 555 timer, im just unsure how to tigger/delay the output.
I guess a bit like a car fan on the radiator once the car got very warm, its runs on.
Any help would be appreciated!
Thanks,
James.