17.37 Consider the 555 circuit of Fig. 17.27 when the Threshold and the Trigger input terminals...

 

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17.37 Consider the 555 circuit of Fig. 17.27 when the Threshold and the Trigger input terminals are joined together and connected to an input voltage v. Verify that the transfer characteristic vo vj is that of an inverting bistable circuit with thresholds Vr = Vec and ViH = Vcc and out- put levels of 0 and Vr. Vcc R1 Threshold Comparator 1 Out VTH Flip-flop R1 Comparator 2 Vn Trigger Discharge 100 0 6 Ground Figure 17.27 A block diagram representation of the internal circult of the 555 integrated-circuit timer. 17.37 Consider the 555 circuit of Fig. 17.27 when the Threshold and the Trigger input terminals are joined together and connected to an input voltage v. Verify that the transfer characteristic vo vj is that of an inverting bistable circuit with thresholds Vr = Vec and ViH = Vcc and out- put levels of 0 and Vr. Vcc R1 Threshold Comparator 1 Out VTH Flip-flop R1 Comparator 2 Vn Trigger Discharge 100 0 6 Ground Figure 17.27 A block diagram representation of the internal circult of the 555 integrated-circuit timer.