Plz help ! Reed switch fails within a few operations

[j37prakash1]

I need to design a circuit to switch on a warning lamp or sound a hooter when a door is opened and the reed switch is activated by the magnet. I have herewith attached the circuit diagram of the test setup. My problem is that the reed switch fails within a few (3 or 4) operations though the current measured is in very small units.
Kindly advise me how to go about it to solve the problem.

View attachment 41521

 

[Hero999]

I assume you're using 110VAC, the DC is a typo?

Even if the steady state current is low, a large current will flow for a short time when the capacitor charges which is probably what's causing the switch to fail.

 

[j37prakash1]

Oh I see Hero999! Then what should I use to substitute the circuit ? Pls explain

 

[Hero999]

Have you tried putting the reed switch on the 24VDC side?

 

[hotwaterwizard2]

Have you tried putting the reed switch on the 24VDC side?

View attachment 41601

 

[hotwaterwizard2]

If worst comes to worst add a relay triggered by the reed switch,