IN2014MU01132A - - Google Patents

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Publication number
IN2014MU01132A
IN2014MU01132A IN1132MU2014A IN2014MU01132A IN 2014MU01132 A IN2014MU01132 A IN 2014MU01132A IN 1132MU2014 A IN1132MU2014 A IN 1132MU2014A IN 2014MU01132 A IN2014MU01132 A IN 2014MU01132A
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IN
India
Prior art keywords
comparator
microcontroller
given
circuit
pulse width
Prior art date
Application number
Inventor
Usufe Shaikh
Shweta U Shetty
Vinod Deshmukh
Original Assignee
Larsen & Toubro Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Larsen & Toubro Ltd filed Critical Larsen & Toubro Ltd
Priority to IN1132MU2014 priority Critical patent/IN2014MU01132A/en
Publication of IN2014MU01132A publication Critical patent/IN2014MU01132A/en

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Abstract

Disclosed isan improved microcontroller based pulse width modulation circuit and method thereof for a circuit breaker.The proposed invention is used for supply voltage regulation in microcontroller based electronic trip unit of circuit breakers. The microcontroller used has an internal analog comparator and digital to analog converter (DAC). The potential divider circuit is used to step down the supply voltage and this is given to the positive terminal of the comparator. The internal DAC of microcontroller is used to generate a threshold voltage and it is given as input to the negative terminal of the comparator. The output of the comparator is given to MOSFET gate. The Pulse Width Modulation (PWM) pulses generated by comparator are used for power supply regulation.
IN1132MU2014 2014-03-28 2014-03-28 IN2014MU01132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IN1132MU2014 IN2014MU01132A (en) 2014-03-28 2014-03-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN1132MU2014 IN2014MU01132A (en) 2014-03-28 2014-03-28

Publications (1)

Publication Number Publication Date
IN2014MU01132A true IN2014MU01132A (en) 2015-10-02

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ID=54395386

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1132MU2014 IN2014MU01132A (en) 2014-03-28 2014-03-28

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IN (1) IN2014MU01132A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10811185B2 (en) 2018-09-13 2020-10-20 Analog Devices Global Unlimited Company Saturation prevention of current transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10811185B2 (en) 2018-09-13 2020-10-20 Analog Devices Global Unlimited Company Saturation prevention of current transformer

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