What alarm clock rings or can be customized to ring for only a couple of seconds in total without disturbing you?

I use a windup alarm clock. I don't wind the alarm spring full but only about 3 winds and it rings enough to get me up but not to disturb me.

Yup.... just unplug it....

The idea of alarm clocks is to keep buzzing until you wake up.  They are supposed disturb you.  If you don't want them to disturb you then don't turn the alarm on.

Design it yourself and then build it. 

USING iPAD ONLINE WAKE UP APP.