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Automatically switches off DMM (DAC7612UBG4)

2015-10-16 02:46  
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The circuit in?Figure 1?lets you install this automatic-shutoff function in aDMM(digital multimeter). The transistor’sgatevoltageis higher than its source, turning on theDMM. When thegatevoltagereaches the threshold level, the transistor turnsoff, thus switchingofftheDMM.

Circuit automatically switches off DMM fig 1 Automatically switches off DMM

Select a miniature, normally open pushbutton switch that will fit into a hole drilled into the circuit’sDMMfront panel.?