StuartHenryWilson
New Member
Hi all,
First of all I should make clear that I am relatively new to this so please bear with me.
I'm trying to design a circuit which has 3 'push-to-make' switches all linked to the one solenoid. I would like the solenoid to run for a set amount of time and then turn off - even if the switch is still in the 'on' position. The time should vary depending on which switch is pressed.
I am having trouble getting my head around this - I am pretty sure it will require the use of a capacitor and various resistors to determine the different amounts of time the solenoid will stay on but I'm not sure how to approach it.
Once I've figured out the basics of this circuit I would maybe like to add an LED which will come on when a button is pressed and stay on for a duration after released.
If anyone could point me in the right direction I would be grateful.
Thanks,
Stuart
First of all I should make clear that I am relatively new to this so please bear with me.
I'm trying to design a circuit which has 3 'push-to-make' switches all linked to the one solenoid. I would like the solenoid to run for a set amount of time and then turn off - even if the switch is still in the 'on' position. The time should vary depending on which switch is pressed.
I am having trouble getting my head around this - I am pretty sure it will require the use of a capacitor and various resistors to determine the different amounts of time the solenoid will stay on but I'm not sure how to approach it.
Once I've figured out the basics of this circuit I would maybe like to add an LED which will come on when a button is pressed and stay on for a duration after released.
If anyone could point me in the right direction I would be grateful.
Thanks,
Stuart
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