Das Szenario
Alarm memory latch circuit that triggers on a momentary alarm signal and remains latched until a reset button is pressed.
Was diese Zeichnung zeigt
Die dahinterstehenden Entscheidungen verstehen.
01
Using a relay with a normally-open holding contact in parallel with the alarm switch
02
Resetting by breaking the coil circuit with a normally-closed pushbutton
When a brief alarm event must be remembered and manually acknowledged.