Suppose you have an loT device with three modes of operation : -Transmitting: lasting for T =36ms for each message, and consuming 150 mA - Network synchronisation, lasting for 500 us and repeating every 5 seconds, consumes 20 mA - Otherwise in a sleep mode, with current draw of 6 µA 1- How many synchronisation cycles are performed in 24 hours (don't put the units) 2- What is the drawn electric charge (measured in mAh) within 24 hours for the synchronisation activities only (format 0.0000 - c put the units) 3- What is the drawn electric charge (measured in mAh) required for sending 50 messages per day (format 0.0000 - don't put th- units) 4- What is the total drawn electric charge (measured in mAh) within the 24 hours (format 0.0000 - don't put the units)

Q: I want Introducrion for ( MEASUREMENT USING DC BRIDGES ) by using Resistance Measurement using DC…

A: DC bridges Bridge circuits are useful to measure to unknown resistance.

IGBT

IGBT stands for insulated gate bipolar transistor. It is a three-terminal device that is primarily used as an electronic switch which was developed to combine high efficiency and fast switching. IGBT is a conductivity-modulated device and consists of four layers, P-N-P-N which is controlled by a metal oxide semiconductor gate (MOS gate) structure. In the entire device operation range, the thyristor is completely suppressed and only the transistor action is permitted although the structure of IGBT is similar to the thyristor with a "MOS" gate. In higher power module, it has many applications. It is used in switching power supplies such as variable frequency drives, trains, electric cars, lamp ballasts, variable speed refrigerators, air conditioners, and arc welding machines. It is also used in switching amplifiers in industrial control systems and sound systems since it is designed to turn off and on rapidly because the IGBT can synthesize complex waveforms with low pass filters and pulse width modulation.