A retriggerable OS can be used as a pulse-frequency detector that detects when the frequency of a
Question:
A retriggerable OS can be used as a pulse-frequency detector that detects when the frequency of a pulse input is below a predetermined value. A simple example of this application is shown in Figure 5-99. The operation begins by momentarily closing switch SW1.
(a) Describe how the circuit responds to input frequencies above 1 kHz.
(b) Describe how the circuit responds to input frequencies below 1 kHz.
(c) How would you modify the circuit to detect when the input frequency drops below 50 kHz?
Figure 5-99
Transcribed Image Text:
Input pulses M Jo TOS 10 tp = 1 ms +5 V J CLK K SW1 CLR X OUTPUT +5 V
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Related Book For
Digital Systems Principles And Application
ISBN: 9780134220130
12th Edition
Authors: Ronald Tocci, Neal Widmer, Gregory Moss
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