Hi all,
I would like to check if there's anyone able to help me out with a basic circuit design as shown in the image.
Basically, there is a door that is normally close where current should flow through hence not activating the alarm.
In the event that someone wants to pass through this door, the normally close circuit will then be open which will cause the buzzer to sound.
Therefore, a voltage relay is added into this circuit that will be normally open. It should only be close when a door entry switch is pressed and allow entry without causing the buzzer to sound.
However, there are some issues I may face whereby how long can the voltage relay last in a close circuit when my door entry switch will only be a ''one tap pressure''. This means that the voltage that trigger this voltage relay will not last longer than a specific duration.
How can I better manage this time frame of my voltage relay to ensure it will not goes back to normally open until my door is closed back?
As well as how can I connect my this door entry switch (that will send the voltage) to the normally open relay in the circuit that I drew.
My sincere apology for my lousy English and at the same time appreciate and thankful for all the help that I may get.
I would like to check if there's anyone able to help me out with a basic circuit design as shown in the image.
Basically, there is a door that is normally close where current should flow through hence not activating the alarm.
In the event that someone wants to pass through this door, the normally close circuit will then be open which will cause the buzzer to sound.
Therefore, a voltage relay is added into this circuit that will be normally open. It should only be close when a door entry switch is pressed and allow entry without causing the buzzer to sound.
However, there are some issues I may face whereby how long can the voltage relay last in a close circuit when my door entry switch will only be a ''one tap pressure''. This means that the voltage that trigger this voltage relay will not last longer than a specific duration.
How can I better manage this time frame of my voltage relay to ensure it will not goes back to normally open until my door is closed back?
As well as how can I connect my this door entry switch (that will send the voltage) to the normally open relay in the circuit that I drew.
My sincere apology for my lousy English and at the same time appreciate and thankful for all the help that I may get.
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