I am trying to design an Electric Door Opener. I am using a solenoid electromagnet to release the door lock. I used a relay in parallel to a capacitor to switch the electromagnet for some time (2 seconds) after I press a push button.
**broken link removed**
(the thich wires carry 5 amp current)
This circuit worked fine for some day. But Since the solenoid would draw 5Amp Current, the relay sparked heavily and was soon rendered uncunduction due to carbon-blackening.
What I want to do now, is use some devices like High Power Mosefet or something like that instead of the relay. So I am seeking your suggestion on this matter.
Also I will be using a 555-timer IC to time the no. seconds to swith on the solenoid.
**broken link removed**
(the thich wires carry 5 amp current)
This circuit worked fine for some day. But Since the solenoid would draw 5Amp Current, the relay sparked heavily and was soon rendered uncunduction due to carbon-blackening.
What I want to do now, is use some devices like High Power Mosefet or something like that instead of the relay. So I am seeking your suggestion on this matter.
Also I will be using a 555-timer IC to time the no. seconds to swith on the solenoid.