Licchavi Lyceum

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Licchavi Lyceum

Month: March 2026

Bistable Multivibrator Circuit

A bistable multivibrator is a fundamental digital electronic circuit that has two stable states. The circuit remains in either of these states indefinitely until an external triggering signal forces it to change its state. Because of this property, the bistable multivibrator is widely used as a memory element in digital systems. In digital electronics, the …

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IC 741 Operational Amplifier | 741C

The IC 741 operational amplifier is one of the most widely used general-purpose operational amplifiers. It was developed as an improved version of earlier op-amps and is designed for a wide range of analog applications such as amplification, filtering, integration, differentiation, and mathematical operations. The 741C is a popular commercial version of the 741 op-amp …

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Operational Amplifier | Op-Amp

An Operational Amplifier (Op-Amp) is a high-gain differential voltage amplifier widely used in analog electronic circuits. It amplifies the difference between two input voltages and produces an output voltage proportional to this difference.   Op-Amps are fundamental building blocks in signal conditioning, filtering, mathematical operations, instrumentation systems, control systems, and power electronics applications. The output …

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ISRO Scientist/ Engineer Exam

ISRO Scientist | Engineer Exam Solved Question Paper ISRO Exam 2025 Electrical Solved Question Paper ISRO Exam 2023 Electrical Solved Question Paper ISRO Exam 2020 Electrical Solved Question Paper  

Current and Time Setting of Relay

In power system protection, relays must be precisely calibrated to distinguish between normal load fluctuations and genuine abnormal conditions like faults or extreme overloads. Two fundamental parameters govern this behavior: Current Setting and Time Setting. Together, they ensure the relay operates accurately and maintains “selectivity” (coordination) with other protective devices. Current Setting The Current Setting, …

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