1 Lecture: DIGITAL SYSTEMS Chapter 10: Oscillator and Timer University of Technical Education Faculty of Electrical & Electronic Engineering Nguyen Thanh Hai, PhD University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 2 10.1 Oscillator Using Logic Gates 10.3 Oscillator Using IC 555 10.4 Monostable Circuit Using IC555 10.2 Monostable Circuit Using Logic Gates Nguyen Thanh Hai, PhD University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 3 Oscillator using NAND gate 10.1 Oscillator Using Logic Gates Nguyen Thanh Hai, PhD University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 4 V CC V CC C1 C2R1 R2 R 1 2 Q QA B V CC V CC C1 C2R1 R2 R 1 2 Q QA B 10.1 Oscillator Using Logic Gates Nguyen Thanh Hai, PhD University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 5 CCC = = 21 RRR == 21 CRRCRRTTT )(4,12ln.)(2 3321 + = + = + = 10.1 Oscillator Using Logic Gates Nguyen Thanh Hai, PhD University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 6 Oscillator with inverse gate of Schmitt trigger Nguyen Thanh Hai, PhD 10.1 Oscillator Using Logic Gates University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 7 Oscillator with inverse gate of Schmitt trigger IHOH ILOH VV VV RCTTT − − === ln.222 21 Nguyen Thanh Hai, PhD 10.1 Oscillator Using Logic Gates University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 8 Nguyen Thanh Hai, PhD 10.1 Oscillator Using Logic Gates University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 9 Nguyen Thanh Hai, PhD 10.1 Oscillator Using Logic Gates University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 10 R C V CC V CC 1 2 X Y Z 1 0 V RCRCT 7.02ln. = = Monostable circuit using NAND gate Nguyen Thanh Hai, PhD 10.2 Monostable Cicuit Using Logic Gates University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 11 Nguyen Thanh Hai, PhD 10.2 Monostable Cicuit Using Logic Gates Monostable circuit using NAND gate University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 12 RCRCT 7.02ln. = = 10.2 Monostable Cicuit Using Logic Gates Nguyen Thanh Hai, PhD Monostable circuit using NOr gate University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 13 10.2 Monostable Cicuit Using Logic Gates Nguyen Thanh Hai, PhD Monostable circuit using NOr gate University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 14 10.3 Oscillator Using IC555 Structure of IC 555 Nguyen Thanh Hai, PhD University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 15 Nguyen Thanh Hai, PhD 10.3 Oscillator Using IC555 University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 16 ( ) 211 7,02ln RRCT N +== τ 22 7,02ln CRT X == τ ( ) ( ) CRRCRRRCTTT 2122121 27,07,07,0 +=++=+= Nguyen Thanh Hai, PhD 10.3 Oscillator Using IC555 University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 17 10.4 Monostable Using IC555 Nguyen Thanh Hai, PhD University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 18 Nguyen Thanh Hai, PhD 10.4 Monostable Using IC555 University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 19 Nguyen Thanh Hai, PhD -Take a look Examples from pages - Answer Review questions at page - Homework University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 20 Nguyen Thanh Hai, PhD The End . Electrical & Electronic Engineering Oscillator and Timer 2 10. 1 Oscillator Using Logic Gates 10. 3 Oscillator Using IC 555 10. 4 Monostable Circuit Using IC555 10. 2 Monostable Circuit Using Logic. Engineering Oscillator and Timer 8 Nguyen Thanh Hai, PhD 10. 1 Oscillator Using Logic Gates University of Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 9 Nguyen. Technical Education Faculty of Electrical & Electronic Engineering Oscillator and Timer 3 Oscillator using NAND gate 10. 1 Oscillator Using Logic Gates Nguyen Thanh Hai, PhD University of Technical