Modified 555 Timer IC Using only Two Comparators

Valerie, Theodora and Garinto, Dodi and Alaydrus, Mudrik and Taufik, Taufik and Ma'arif, Eka Samsul (2021) Modified 555 Timer IC Using only Two Comparators. In: 2021 1st International Conference on Electronic and Electrical Engineering and Intelligent System (ICE3IS), 15-16 October 2021, Yogyakarta.

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Abstract

This paper proposed a modified 555 timer IC with only two comparators by eliminating the discharge transistor and SR flip-flop. A periodic square waveform can be generated by utilizing the interconnection of two comparators to provide 'Set' and 'Reset' conditions to each other. The simulation and experimental results confirm that the clock frequency generated by the modified 555 timer circuit is significantly higher and duty cycle adjustment can be made more precise and flexible than the commercially available 555 timer circuit. A frequency in the band of 1MHz to 89MHz can be generated by replacing the resistors, capacitor, and comparator specification in all possible configurations. As a result, a lower cost and higher efficiency on-chip reference clock generator can be realized to fulfill versatile future application needs. © 2021 IEEE.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Cited by: 0
Uncontrolled Keywords: Comparator circuits; Comparators (optical); Flexible electronics; Flip flop circuits; Square wave generators; 555 timer IC; Clock frequency; Condition; Duty-cycle; High cycle; Low-high; Resistor capacitors; Square waveform; Squarewave generators; Timer circuits; Timing circuits
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Electrical and Information Technology Department
Depositing User: Sri JUNANDI
Date Deposited: 10 Oct 2024 03:21
Last Modified: 10 Oct 2024 03:21
URI: https://ir.lib.ugm.ac.id/id/eprint/8670

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