1 / 48

Chapter 13 Signal Generators and Waveform- Shaping Circuits

Chapter 13 Signal Generators and Waveform- Shaping Circuits. 13.4 Bistable multivibrators 13.5 Generation of square and triangular waveforms using astable multivibrators 13.6 Generation of a standardized pulse – The monostable multivibrator 13.7 Integrated – circuit timers.

oihane
Download Presentation

Chapter 13 Signal Generators and Waveform- Shaping Circuits

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 13Signal Generators and Waveform- Shaping Circuits • 13.4 Bistable multivibrators • 13.5 Generation of square and triangular waveforms using astable multivibrators • 13.6 Generation of a standardized pulse – The monostable multivibrator • 13.7 Integrated – circuit timers

  2. The oscillator feeback loop

  3. The oscillation criterion

  4. 13.4.1 The Feedback Loop . Fig.13.17 A positive – feedback loop capable of bistable operation

  5. 13.4.2 Transfer Characteristics of the Bistable Circuit . Fig. 13.19 (a) The bistable circuit of Fig. 13.17 with the negative input terminal of the op amp disconnected from ground and connected to an input signal vI ; (b) The transfer characteristic of (a) for increasing vI ; (c) The transfer characteristic for decreasing vI and (d) The complete transfer characteristics

  6. 13.4.5 A Bistable Circuit with Noninverting Transfer Charactewristics . Fig. 13.20 (a) A bistable circuit derived from the positive – feedback loop of Fig. 13.7 by applyingvI through RI . (b) The trasnfer characteristic of the circuit in (a) is noninverting

  7. 13-4-5 A bistable circuit with noninverting transfer characteristics

  8. 13.4.6 Application of the Bistable Circuit as a Comparator . Fig. 13.21 . (a) Block diagram representationand transfer characteristic for comparator having a reference , or threshold, voltage vR . (b) Comparator characteristic with hysteresis .

  9. 13-5 Generation of square and triangular waveforms using astable multivibrators

  10. Fig. 13.24 (a) Connecting a bistable multivibrator with inverting transfer characteristics in a feedback loop with an RC circuit

  11. Fig. 13.24 (continued) (b) the circcuit obtained when the bistable multivibrator is implemented with the circuit in Fig. 13.19(a) . (c) Waveforms at various nodes of the circuit in (b) . This circuit is called an astable multivibrator .

  12. 13.7 Integrated Circuit Timers . Fig. 13.27 A block diagram representation of the internal circuit of the 555 integrated- circuit timer .

  13. 13.7.2 Implementing a Monostable Multivibrator Using the 555 IC . Fig. 13.28 (a) The 555 timer connected to implement a monostable multivibrator . (b) Waveforms of the circuit in

  14. 13.7.3 An astable multivibrator using the 555 IC . Fig. 13.29 (A) The 555 timer connected to implement an astable multivibrator . (b) Waveforms of the circuit in (a) .

More Related