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SM72375 Datasheet(PDF) 11 Page - Texas Instruments |
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SM72375 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 20 page SM72375 www.ti.com SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 ONE-SHOT MULTIVIBRATOR Figure 27. One-Shot Multivibrator A monostable multivibrator has one stable state in which it can remain indefinitely. It can be triggered externally to another quasi-stable state. A monostable multivibrator can thus be used to generate a pulse of desired width. The desired pulse width is set by adjusting the values of C2 and R4. The resistor divider of R1 and R2 can be used to determine the magnitude of the input trigger pulse. The SM72375 will change state when V1 < V2. Diode D2 provides a rapid discharge path for capacitor C2 to reset at the end of the pulse. The diode also prevents the non-inverting input from being driven below ground. BI-STABLE MULTIVIBRATOR Figure 28. Bi-Stable Multivibrator A bi-stable multivibrator has two stable states. The reference voltage is set up by the voltage divider of R2 and R3. A pulse applied to the SET terminal will switch the output of the comparator high. The resistor divider of R1, R4, and R5 now clamps the non-inverting input to a voltage greater than the reference voltage. A pulse applied to RESET will now toggle the output low. ZERO CROSSING DETECTOR Figure 29. Zero Crossing Detector Copyright © 2010–2013, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: SM72375 |
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