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  1. M

    magnetic switch activated alarm

    Thanks to both of you for your help. It's working now. Davenn got me to go back to the schematic (for using the positive only to switch to the wailer). And Resqueline made me understand that you REALLY have to look at the datasheet before wiring components. I attach the final breadboard...
  2. M

    magnetic switch activated alarm

    Hello, the relay I use is this one: http://www.rapidonline.com/netalogue/specs/60-4754e.pdf That's what I should be using according to the layout drawing. The schematic is an earlier version of that part of the cct. But I think the problem with that is that once the alarm goes of it can be...
  3. M

    magnetic switch activated alarm

    well I get 10v (with magnet off) from the +/- ends of the relay coil. What I mean is even though the relay clicks I don't get any current out of the - end of the relay switch (that black cable going to the wailer part). I checked again and the wailer works, it's just that relay switch on the -...
  4. M

    magnetic switch activated alarm

    thanks man but as Resqueline said I need the latching function so that the alarm stays on even when you put the magnet back on the reed-switch. Anyway I tried your solution and same thing happens the relay clicks but no wail.
  5. M

    magnetic switch activated alarm

    Hello, I assembled a circuit on a breadboard which is separated in 2 parts: the right part is for generating an alarm which wails. the left part is for starting the current flow to the first part when the magnet is detached from the reed switch. Apparently the 1st part works (I get the...
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